49996440 has 160 divisors (see below), whose sum is σ = 181122480. Its totient is φ = 12296448.

The previous prime is 49996421. The next prime is 49996469. The reversal of 49996440 is 4469994.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41527 + ... + 42713.

Almost surely, 2^49996440 is an apocalyptic number.

49996440 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 49996440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90561240).

49996440 is an abundant number, since it is smaller than the sum of its proper divisors (131126040).

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

49996440 is a wasteful number, since it uses less digits than its factorization.

49996440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 49996440 is about 7070.8160773704. The cubic root of 49996440 is about 368.3944062218.

The spelling of 49996440 in words is "forty-nine million, nine hundred ninety-six thousand, four hundred forty".