400360145 has 16 divisors (see below), whose sum is σ = 492045840. Its totient is φ = 312609024.

The previous prime is 400360139. The next prime is 400360157. The reversal of 400360145 is 541063004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 143976001 + 256384144 = 11999^2 + 16012^2 .

It is a cyclic number.

It is not a de Polignac number, because 400360145 - 2¹⁰ = 400359121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400360145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48371 + ... + 56039.

It is an arithmetic number, because the mean of its divisors is an integer number (30752865).

Almost surely, 2^400360145 is an apocalyptic number.

It is an amenable number.

400360145 is a deficient number, since it is larger than the sum of its proper divisors (91685695).

400360145 is a wasteful number, since it uses less digits than its factorization.

400360145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7924.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 400360145 is about 20009.0015992803. The cubic root of 400360145 is about 737.0273643159.

The spelling of 400360145 in words is "four hundred million, three hundred sixty thousand, one hundred forty-five".