40395967 has 4 divisors (see below), whose sum is σ = 40482936. Its totient is φ = 40309000.

The previous prime is 40395959. The next prime is 40395977. The reversal of 40395967 is 76959304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40395967 - 2³ = 40395959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40395907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42784 + ... + 43717.

It is an arithmetic number, because the mean of its divisors is an integer number (10120734).

Almost surely, 2^40395967 is an apocalyptic number.

40395967 is a deficient number, since it is larger than the sum of its proper divisors (86969).

40395967 is an equidigital number, since it uses as much as digits as its factorization.

40395967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86968.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 40395967 is about 6355.7821705908. The cubic root of 40395967 is about 343.1199760491.

The spelling of 40395967 in words is "forty million, three hundred ninety-five thousand, nine hundred sixty-seven".