49429440 has 140 divisors (see below), whose sum is σ = 175921416. Its totient is φ = 13174272.

The previous prime is 49429379. The next prime is 49429441. The reversal of 49429440 is 4492494.

It is a happy number.

49429440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49429395 and 49429404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49429441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24967 + ... + 26873.

Almost surely, 2^49429440 is an apocalyptic number.

49429440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49429440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87960708).

49429440 is an abundant number, since it is smaller than the sum of its proper divisors (126491976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49429440 is a wasteful number, since it uses less digits than its factorization.

49429440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 49429440 is about 7030.6073706331. The cubic root of 49429440 is about 366.9964782730.

The spelling of 49429440 in words is "forty-nine million, four hundred twenty-nine thousand, four hundred forty".