400005151 has 32 divisors (see below), whose sum is σ = 505346688. Its totient is φ = 308206080.

The previous prime is 400005139. The next prime is 400005161. The reversal of 400005151 is 151500004.

It is a happy number.

It is not a de Polignac number, because 400005151 - 2¹³ = 399996959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400005131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949921 + ... + 950341.

It is an arithmetic number, because the mean of its divisors is an integer number (15792084).

Almost surely, 2^400005151 is an apocalyptic number.

400005151 is a deficient number, since it is larger than the sum of its proper divisors (105341537).

400005151 is a wasteful number, since it uses less digits than its factorization.

400005151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 400005151 is about 20000.1287745854. The cubic root of 400005151 is about 736.8094624555.

Adding to 400005151 its reverse (151500004), we get a palindrome (551505155).

The spelling of 400005151 in words is "four hundred million, five thousand, one hundred fifty-one".