39049440 has 48 divisors (see below), whose sum is σ = 123007248. Its totient is φ = 10413056.

The previous prime is 39049411. The next prime is 39049441. The reversal of 39049440 is 4494093.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39049441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40197 + ... + 41156.

It is an arithmetic number, because the mean of its divisors is an integer number (2562651).

Almost surely, 2^39049440 is an apocalyptic number.

39049440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39049440 is an abundant number, since it is smaller than the sum of its proper divisors (83957808).

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

39049440 is a wasteful number, since it uses less digits than its factorization.

39049440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81371 (or 81363 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 39049440 is about 6248.9551126568. The cubic root of 39049440 is about 339.2643842124.

The spelling of 39049440 in words is "thirty-nine million, forty-nine thousand, four hundred forty".