400075623 has 24 divisors (see below), whose sum is σ = 583158576. Its totient is φ = 264297600.

The previous prime is 400075607. The next prime is 400075681. The reversal of 400075623 is 326570004.

It is a happy number.

It is not a de Polignac number, because 400075623 - 2⁴ = 400075607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400075523) 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, 867613 + ... + 868073.

It is an arithmetic number, because the mean of its divisors is an integer number (24298274).

Almost surely, 2^400075623 is an apocalyptic number.

400075623 is a deficient number, since it is larger than the sum of its proper divisors (183082953).

400075623 is a wasteful number, since it uses less digits than its factorization.

400075623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 400075623 is about 20001.8904856516. The cubic root of 400075623 is about 736.8527297212.

The spelling of 400075623 in words is "four hundred million, seventy-five thousand, six hundred twenty-three".