400848516 has 72 divisors (see below), whose sum is σ = 1029266784. Its totient is φ = 131523840.

The previous prime is 400848433. The next prime is 400848517. The reversal of 400848516 is 615848004.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (400848517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 858115 + ... + 858581.

It is an arithmetic number, because the mean of its divisors is an integer number (14295372).

Almost surely, 2^400848516 is an apocalyptic number.

It is an amenable number.

400848516 is an abundant number, since it is smaller than the sum of its proper divisors (628418268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400848516 is a wasteful number, since it uses less digits than its factorization.

400848516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 400848516 is about 20021.2016622380. The cubic root of 400848516 is about 737.3269250475.

The spelling of 400848516 in words is "four hundred million, eight hundred forty-eight thousand, five hundred sixteen".