39946540 has 48 divisors (see below), whose sum is σ = 86436000. Its totient is φ = 15501312.

The previous prime is 39946523. The next prime is 39946541. The reversal of 39946540 is 4564993.

It is a junction number, because it is equal to n+sod(n) for n = 39946493 and 39946502.

It is not an unprimeable number, because it can be changed into a prime (39946541) 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, 114286 + ... + 114634.

It is an arithmetic number, because the mean of its divisors is an integer number (1800750).

Almost surely, 2^39946540 is an apocalyptic number.

It is an amenable number.

39946540 is an abundant number, since it is smaller than the sum of its proper divisors (46489460).

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

39946540 is a wasteful number, since it uses less digits than its factorization.

39946540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 39946540 is about 6320.3275231589. The cubic root of 39946540 is about 341.8427625522.

The spelling of 39946540 in words is "thirty-nine million, nine hundred forty-six thousand, five hundred forty".