39774540 has 48 divisors (see below), whose sum is σ = 119937888. Its totient is φ = 9790464.

The previous prime is 39774529. The next prime is 39774547. The reversal of 39774540 is 4547793.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (39774547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24717 + ... + 26276.

It is an arithmetic number, because the mean of its divisors is an integer number (2498706).

Almost surely, 2^39774540 is an apocalyptic number.

39774540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39774540 is an abundant number, since it is smaller than the sum of its proper divisors (80163348).

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

39774540 is a wasteful number, since it uses less digits than its factorization.

39774540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51018 (or 51016 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 39774540 is about 6306.7059547754. The cubic root of 39774540 is about 341.3514263311.

The spelling of 39774540 in words is "thirty-nine million, seven hundred seventy-four thousand, five hundred forty".