400214154 has 32 divisors (see below), whose sum is σ = 827375616. Its totient is φ = 128925360.

The previous prime is 400214147. The next prime is 400214159. The reversal of 400214154 is 451412004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400214154.

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 15 ways as a sum of consecutive naturals, for example, 268399 + ... + 269885.

It is an arithmetic number, because the mean of its divisors is an integer number (25855488).

Almost surely, 2^400214154 is an apocalyptic number.

400214154 is an abundant number, since it is smaller than the sum of its proper divisors (427161462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400214154 is a wasteful number, since it uses less digits than its factorization.

400214154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 400214154 is about 20005.3531335990. The cubic root of 400214154 is about 736.9377679491.

Adding to 400214154 its reverse (451412004), we get a palindrome (851626158).

The spelling of 400214154 in words is "four hundred million, two hundred fourteen thousand, one hundred fifty-four".