49388440 has 32 divisors (see below), whose sum is σ = 111332880. Its totient is φ = 19718272.

The previous prime is 49388407. The next prime is 49388453. The reversal of 49388440 is 4488394.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 49388393 and 49388402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32334 + ... + 33826.

Almost surely, 2^49388440 is an apocalyptic number.

49388440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49388440 is an abundant number, since it is smaller than the sum of its proper divisors (61944440).

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

49388440 is a wasteful number, since it uses less digits than its factorization.

49388440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 49388440 is about 7027.6909436884. The cubic root of 49388440 is about 366.8949799365.

The spelling of 49388440 in words is "forty-nine million, three hundred eighty-eight thousand, four hundred forty".