36403987 has 8 divisors (see below), whose sum is σ = 38761632. Its totient is φ = 34070400.

The previous prime is 36403973. The next prime is 36404033. The reversal of 36403987 is 78930463.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36403987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36401987) 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, 2839 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (4845204).

Almost surely, 2^36403987 is an apocalyptic number.

36403987 is a deficient number, since it is larger than the sum of its proper divisors (2357645).

36403987 is a wasteful number, since it uses less digits than its factorization.

36403987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12029.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 36403987 is about 6033.5716619594. The cubic root of 36403987 is about 331.4232589761.

The spelling of 36403987 in words is "thirty-six million, four hundred three thousand, nine hundred eighty-seven".