400317245 has 16 divisors (see below), whose sum is σ = 494905008. Its totient is φ = 310625280.

The previous prime is 400317233. The next prime is 400317259. The reversal of 400317245 is 542713004.

It can be written as a sum of positive squares in 8 ways, for example, as 2474329 + 397842916 = 1573^2 + 19946^2 .

It is not a de Polignac number, because 400317245 - 2¹² = 400313149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59135 + ... + 65555.

It is an arithmetic number, because the mean of its divisors is an integer number (30931563).

Almost surely, 2^400317245 is an apocalyptic number.

It is an amenable number.

400317245 is a deficient number, since it is larger than the sum of its proper divisors (94587763).

400317245 is a wasteful number, since it uses less digits than its factorization.

400317245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 400317245 is about 20007.9295530547. The cubic root of 400317245 is about 737.0010383494.

The spelling of 400317245 in words is "four hundred million, three hundred seventeen thousand, two hundred forty-five".