400523433 has 4 divisors (see below), whose sum is σ = 534031248. Its totient is φ = 267015620.

The previous prime is 400523429. The next prime is 400523507. The reversal of 400523433 is 334325004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400523433 - 2² = 400523429 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400523033) 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, 66753903 + ... + 66753908.

It is an arithmetic number, because the mean of its divisors is an integer number (133507812).

Almost surely, 2^400523433 is an apocalyptic number.

It is an amenable number.

400523433 is a deficient number, since it is larger than the sum of its proper divisors (133507815).

400523433 is a wasteful number, since it uses less digits than its factorization.

400523433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133507814.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 400523433 is about 20013.0815468283. The cubic root of 400523433 is about 737.1275502511.

Adding to 400523433 its reverse (334325004), we get a palindrome (734848437).

The spelling of 400523433 in words is "four hundred million, five hundred twenty-three thousand, four hundred thirty-three".