40607997 has 16 divisors (see below), whose sum is σ = 57131520. Its totient is φ = 25585200.

The previous prime is 40607993. The next prime is 40608011. The reversal of 40607997 is 79970604.

It is not a de Polignac number, because 40607997 - 2² = 40607993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40607993) 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, 38872 + ... + 39902.

It is an arithmetic number, because the mean of its divisors is an integer number (3570720).

Almost surely, 2^40607997 is an apocalyptic number.

It is an amenable number.

40607997 is a deficient number, since it is larger than the sum of its proper divisors (16523523).

40607997 is a wasteful number, since it uses less digits than its factorization.

40607997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 40607997 is about 6372.4404273402. The cubic root of 40607997 is about 343.7192504946.

The spelling of 40607997 in words is "forty million, six hundred seven thousand, nine hundred ninety-seven".