40431995 has 4 divisors (see below), whose sum is σ = 48518400. Its totient is φ = 32345592.

The previous prime is 40431977. The next prime is 40432013. The reversal of 40431995 is 59913404.

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

It is an interprime number because it is at equal distance from previous prime (40431977) and next prime (40432013).

It is a cyclic number.

It is not a de Polignac number, because 40431995 - 2⁶ = 40431931 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4043195 + ... + 4043204.

It is an arithmetic number, because the mean of its divisors is an integer number (12129600).

Almost surely, 2^40431995 is an apocalyptic number.

40431995 is a deficient number, since it is larger than the sum of its proper divisors (8086405).

40431995 is an equidigital number, since it uses as much as digits as its factorization.

40431995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8086404.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 40431995 is about 6358.6158084917. The cubic root of 40431995 is about 343.2219520148.

The spelling of 40431995 in words is "forty million, four hundred thirty-one thousand, nine hundred ninety-five".