400654545 has 32 divisors (see below), whose sum is σ = 658160640. Its totient is φ = 208048320.

The previous prime is 400654493. The next prime is 400654561. The reversal of 400654545 is 545456004.

It is not a de Polignac number, because 400654545 - 2⁷ = 400654417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92580 + ... + 96810.

It is an arithmetic number, because the mean of its divisors is an integer number (20567520).

Almost surely, 2^400654545 is an apocalyptic number.

It is an amenable number.

400654545 is a deficient number, since it is larger than the sum of its proper divisors (257506095).

400654545 is a wasteful number, since it uses less digits than its factorization.

400654545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 400654545 is about 20016.3569362659. The cubic root of 400654545 is about 737.2079747786.

The spelling of 400654545 in words is "four hundred million, six hundred fifty-four thousand, five hundred forty-five".