40386697 has 8 divisors (see below), whose sum is σ = 44207240. Its totient is φ = 36668160.

The previous prime is 40386691. The next prime is 40386701. The reversal of 40386697 is 79668304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 34798201 = 2364^2 + 5899^2 .

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 40386697 - 2⁷ = 40386569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40386691) 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, 24672 + ... + 26257.

It is an arithmetic number, because the mean of its divisors is an integer number (5525905).

Almost surely, 2^40386697 is an apocalyptic number.

It is an amenable number.

40386697 is a deficient number, since it is larger than the sum of its proper divisors (3820543).

40386697 is a wasteful number, since it uses less digits than its factorization.

40386697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51003.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 40386697 is about 6355.0528715346. The cubic root of 40386697 is about 343.0937278388.

The spelling of 40386697 in words is "forty million, three hundred eighty-six thousand, six hundred ninety-seven".