400523044 has 6 divisors (see below), whose sum is σ = 700915334. Its totient is φ = 200261520.

The previous prime is 400523033. The next prime is 400523047. The reversal of 400523044 is 440325004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 290020900 + 110502144 = 17030^2 + 10512^2 .

It is not an unprimeable number, because it can be changed into a prime (400523047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50065377 + ... + 50065384.

Almost surely, 2^400523044 is an apocalyptic number.

It is an amenable number.

400523044 is a deficient number, since it is larger than the sum of its proper divisors (300392290).

400523044 is a wasteful number, since it uses less digits than its factorization.

400523044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100130765 (or 100130763 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 400523044 is about 20013.0718281827. The cubic root of 400523044 is about 737.1273116111.

Adding to 400523044 its reverse (440325004), we get a palindrome (840848048).

The spelling of 400523044 in words is "four hundred million, five hundred twenty-three thousand, forty-four".