400075199 has 4 divisors (see below), whose sum is σ = 400126680. Its totient is φ = 400023720.

The previous prime is 400075177. The next prime is 400075231. The reversal of 400075199 is 991570004.

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 400075199 - 2²⁰ = 399026623 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 (400072199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11432 + ... + 30509.

It is an arithmetic number, because the mean of its divisors is an integer number (100031670).

Almost surely, 2^400075199 is an apocalyptic number.

400075199 is a deficient number, since it is larger than the sum of its proper divisors (51481).

400075199 is an equidigital number, since it uses as much as digits as its factorization.

400075199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51480.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 400075199 is about 20001.8798866507. The cubic root of 400075199 is about 736.8524694157.

The spelling of 400075199 in words is "four hundred million, seventy-five thousand, one hundred ninety-nine".