40624397 has 8 divisors (see below), whose sum is σ = 44363712. Its totient is φ = 36892800.

The previous prime is 40624393. The next prime is 40624439. The reversal of 40624397 is 79342604.

40624397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40624397 - 2² = 40624393 is a prime.

It is a super-2 number, since 2×40624397² = 3300683263227218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40624393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19133 + ... + 21149.

It is an arithmetic number, because the mean of its divisors is an integer number (5545464).

Almost surely, 2^40624397 is an apocalyptic number.

It is an amenable number.

40624397 is a deficient number, since it is larger than the sum of its proper divisors (3739315).

40624397 is a wasteful number, since it uses less digits than its factorization.

40624397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 40624397 is about 6373.7270886037. The cubic root of 40624397 is about 343.7655159057.

The spelling of 40624397 in words is "forty million, six hundred twenty-four thousand, three hundred ninety-seven".