36401999 has 2 divisors, whose sum is σ = 36402000. Its totient is φ = 36401998.

The previous prime is 36401993. The next prime is 36402013. The reversal of 36401999 is 99910463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36401999 - 2⁴ = 36401983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36401993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18200999 + 18201000.

It is an arithmetic number, because the mean of its divisors is an integer number (18201000).

Almost surely, 2^36401999 is an apocalyptic number.

36401999 is a deficient number, since it is larger than the sum of its proper divisors (1).

36401999 is an equidigital number, since it uses as much as digits as its factorization.

36401999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 36401999 is about 6033.4069148368. The cubic root of 36401999 is about 331.4172259242.

The spelling of 36401999 in words is "thirty-six million, four hundred one thousand, nine hundred ninety-nine".