400516339 has 4 divisors (see below), whose sum is σ = 401385600. Its totient is φ = 399647080.

The previous prime is 400516327. The next prime is 400516343. The reversal of 400516339 is 933615004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400516339 - 2⁷ = 400516211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400516339.

It is not an unprimeable number, because it can be changed into a prime (400516309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433939 + ... + 434860.

It is an arithmetic number, because the mean of its divisors is an integer number (100346400).

Almost surely, 2^400516339 is an apocalyptic number.

400516339 is a deficient number, since it is larger than the sum of its proper divisors (869261).

400516339 is an equidigital number, since it uses as much as digits as its factorization.

400516339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869260.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 400516339 is about 20012.9043119683. The cubic root of 400516339 is about 737.1231982679.

The spelling of 400516339 in words is "four hundred million, five hundred sixteen thousand, three hundred thirty-nine".