400164929 has 4 divisors (see below), whose sum is σ = 404127060. Its totient is φ = 396202800.

The previous prime is 400164917. The next prime is 400164931. The reversal of 400164929 is 929461004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 305550400 + 94614529 = 17480^2 + 9727^2 .

It is not a de Polignac number, because 400164929 - 2¹⁶ = 400099393 is a prime.

It is a super-3 number, since 3×400164929³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400164959) 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, 1980914 + ... + 1981115.

It is an arithmetic number, because the mean of its divisors is an integer number (101031765).

Almost surely, 2^400164929 is an apocalyptic number.

It is an amenable number.

400164929 is a deficient number, since it is larger than the sum of its proper divisors (3962131).

400164929 is a wasteful number, since it uses less digits than its factorization.

400164929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962130.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 400164929 is about 20004.1228000630. The cubic root of 400164929 is about 736.9075530848.

The spelling of 400164929 in words is "four hundred million, one hundred sixty-four thousand, nine hundred twenty-nine".