36399431 has 8 divisors (see below), whose sum is σ = 39481344. Its totient is φ = 33422080.

The previous prime is 36399413. The next prime is 36399449. The reversal of 36399431 is 13499363.

36399431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (36399413) and next prime (36399449).

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 36399431 - 2²² = 32205127 is a prime.

It is a super-2 number, since 2×36399431² = 2649837154247522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36399481) 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, 25415 + ... + 26808.

It is an arithmetic number, because the mean of its divisors is an integer number (4935168).

Almost surely, 2^36399431 is an apocalyptic number.

36399431 is a deficient number, since it is larger than the sum of its proper divisors (3081913).

36399431 is a wasteful number, since it uses less digits than its factorization.

36399431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52281.

The product of its digits is 52488, while the sum is 38.

The square root of 36399431 is about 6033.1940959992. The cubic root of 36399431 is about 331.4094324012.

The spelling of 36399431 in words is "thirty-six million, three hundred ninety-nine thousand, four hundred thirty-one".