400351245 has 32 divisors (see below), whose sum is σ = 733466880. Its totient is φ = 182668800.

The previous prime is 400351219. The next prime is 400351253. The reversal of 400351245 is 542153004.

It is not a de Polignac number, because 400351245 - 2⁶ = 400351181 is a prime.

It is a super-2 number, since 2×400351245² = 320562238746100050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56395 + ... + 63095.

It is an arithmetic number, because the mean of its divisors is an integer number (22920840).

Almost surely, 2^400351245 is an apocalyptic number.

It is an amenable number.

400351245 is a deficient number, since it is larger than the sum of its proper divisors (333115635).

400351245 is a wasteful number, since it uses less digits than its factorization.

400351245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7285.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 400351245 is about 20008.7791981420. The cubic root of 400351245 is about 737.0219029064.

The spelling of 400351245 in words is "four hundred million, three hundred fifty-one thousand, two hundred forty-five".