400523413 has 4 divisors (see below), whose sum is σ = 400696128. Its totient is φ = 400350700.

The previous prime is 400523369. The next prime is 400523429. The reversal of 400523413 is 314325004.

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 400523413 - 2⁹ = 400522901 is a prime.

It is a super-2 number, since 2×400523413² = 320838008722337138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400524413) 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, 82831 + ... + 87532.

It is an arithmetic number, because the mean of its divisors is an integer number (100174032).

Almost surely, 2^400523413 is an apocalyptic number.

It is an amenable number.

400523413 is a deficient number, since it is larger than the sum of its proper divisors (172715).

400523413 is a wasteful number, since it uses less digits than its factorization.

400523413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172714.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 400523413 is about 20013.0810471551. The cubic root of 400523413 is about 737.1275379817.

Adding to 400523413 its reverse (314325004), we get a palindrome (714848417).

The spelling of 400523413 in words is "four hundred million, five hundred twenty-three thousand, four hundred thirteen".