400551167 has 4 divisors (see below), whose sum is σ = 400605456. Its totient is φ = 400496880.

The previous prime is 400551163. The next prime is 400551191. The reversal of 400551167 is 761155004.

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 400551167 - 2² = 400551163 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 (400551163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13934 + ... + 31547.

It is an arithmetic number, because the mean of its divisors is an integer number (100151364).

Almost surely, 2^400551167 is an apocalyptic number.

400551167 is a deficient number, since it is larger than the sum of its proper divisors (54289).

400551167 is an equidigital number, since it uses as much as digits as its factorization.

400551167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54288.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 400551167 is about 20013.7744316258. The cubic root of 400551167 is about 737.1445638404.

The spelling of 400551167 in words is "four hundred million, five hundred fifty-one thousand, one hundred sixty-seven".