39540812 has 6 divisors (see below), whose sum is σ = 69196428. Its totient is φ = 19770404.

The previous prime is 39540811. The next prime is 39540821. The reversal of 39540812 is 21804593.

It is not an unprimeable number, because it can be changed into a prime (39540811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942598 + ... + 4942605.

It is an arithmetic number, because the mean of its divisors is an integer number (11532738).

Almost surely, 2^39540812 is an apocalyptic number.

It is an amenable number.

39540812 is a deficient number, since it is larger than the sum of its proper divisors (29655616).

39540812 is a wasteful number, since it uses less digits than its factorization.

39540812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885207 (or 9885205 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 39540812 is about 6288.1485351413. The cubic root of 39540812 is about 340.6814820570.

The spelling of 39540812 in words is "thirty-nine million, five hundred forty thousand, eight hundred twelve".