400500146 has 8 divisors (see below), whose sum is σ = 601142700. Its totient is φ = 200119248.

The previous prime is 400500131. The next prime is 400500157. The reversal of 400500146 is 641005004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400440121 + 60025 = 20011^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×400500146³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61541 + ... + 67736.

Almost surely, 2^400500146 is an apocalyptic number.

400500146 is a deficient number, since it is larger than the sum of its proper divisors (200642554).

400500146 is a wasteful number, since it uses less digits than its factorization.

400500146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130828.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 400500146 is about 20012.4997439101. The cubic root of 400500146 is about 737.1132640941.

The spelling of 400500146 in words is "four hundred million, five hundred thousand, one hundred forty-six".