400451513 has 8 divisors (see below), whose sum is σ = 499264320. Its totient is φ = 312040080.

The previous prime is 400451479. The next prime is 400451539. The reversal of 400451513 is 315154004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400451513 - 2⁶ = 400451449 is a prime.

It is a super-2 number, since 2×400451513² = 320722828527978338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400451213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600258 + ... + 2600411.

It is an arithmetic number, because the mean of its divisors is an integer number (62408040).

Almost surely, 2^400451513 is an apocalyptic number.

It is an amenable number.

400451513 is a deficient number, since it is larger than the sum of its proper divisors (98812807).

400451513 is a wasteful number, since it uses less digits than its factorization.

400451513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200687.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 400451513 is about 20011.2846414217. The cubic root of 400451513 is about 737.0834268345.

The spelling of 400451513 in words is "four hundred million, four hundred fifty-one thousand, five hundred thirteen".