400214155 has 24 divisors (see below), whose sum is σ = 530050752. Its totient is φ = 289872000.

The previous prime is 400214147. The next prime is 400214159. The reversal of 400214155 is 551412004.

It is not a de Polignac number, because 400214155 - 2³ = 400214147 is a prime.

It is a super-3 number, since 3×400214155³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400214159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162735 + ... + 165175.

It is an arithmetic number, because the mean of its divisors is an integer number (22085448).

Almost surely, 2^400214155 is an apocalyptic number.

400214155 is a deficient number, since it is larger than the sum of its proper divisors (129836597).

400214155 is a wasteful number, since it uses less digits than its factorization.

400214155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 400214155 is about 20005.3531585923. The cubic root of 400214155 is about 736.9377685629.

Adding to 400214155 its reverse (551412004), we get a palindrome (951626159).

The spelling of 400214155 in words is "four hundred million, two hundred fourteen thousand, one hundred fifty-five".