40397012 has 24 divisors (see below), whose sum is σ = 72438912. Its totient is φ = 19706400.

The previous prime is 40397009. The next prime is 40397051. The reversal of 40397012 is 21079304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28562 + ... + 29942.

It is an arithmetic number, because the mean of its divisors is an integer number (3018288).

Almost surely, 2^40397012 is an apocalyptic number.

It is an amenable number.

40397012 is a deficient number, since it is larger than the sum of its proper divisors (32041900).

40397012 is a wasteful number, since it uses less digits than its factorization.

40397012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40397012 is about 6355.8643786664. The cubic root of 40397012 is about 343.1229347378.

The spelling of 40397012 in words is "forty million, three hundred ninety-seven thousand, twelve".