400350523 has 4 divisors (see below), whose sum is σ = 413265088. Its totient is φ = 387435960.

The previous prime is 400350521. The next prime is 400350529. The reversal of 400350523 is 325053004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400350523 - 2¹ = 400350521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400350494 and 400350503.

It is not an unprimeable number, because it can be changed into a prime (400350521) 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, 6457236 + ... + 6457297.

It is an arithmetic number, because the mean of its divisors is an integer number (103316272).

Almost surely, 2^400350523 is an apocalyptic number.

400350523 is a deficient number, since it is larger than the sum of its proper divisors (12914565).

400350523 is a wasteful number, since it uses less digits than its factorization.

400350523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914564.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 400350523 is about 20008.7611560536. The cubic root of 400350523 is about 737.0214598537.

The spelling of 400350523 in words is "four hundred million, three hundred fifty thousand, five hundred twenty-three".