40297912 has 32 divisors (see below), whose sum is σ = 76982400. Its totient is φ = 19773664.

The previous prime is 40297903. The next prime is 40297919. The reversal of 40297912 is 21979204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40297919) 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, 153093 + ... + 153355.

It is an arithmetic number, because the mean of its divisors is an integer number (2405700).

Almost surely, 2^40297912 is an apocalyptic number.

It is an amenable number.

40297912 is a deficient number, since it is larger than the sum of its proper divisors (36684488).

40297912 is a wasteful number, since it uses less digits than its factorization.

40297912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 40297912 is about 6348.0636417730. The cubic root of 40297912 is about 342.8421274509.

It can be divided in two parts, 40297 and 912, that added together give a square (41209 = 203²).

The spelling of 40297912 in words is "forty million, two hundred ninety-seven thousand, nine hundred twelve".