400340364 has 12 divisors (see below), whose sum is σ = 934127544. Its totient is φ = 133446784.

The previous prime is 400340357. The next prime is 400340371. The reversal of 400340364 is 463043004.

It is an interprime number because it is at equal distance from previous prime (400340357) and next prime (400340371).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16680837 + ... + 16680860.

It is an arithmetic number, because the mean of its divisors is an integer number (77843962).

Almost surely, 2^400340364 is an apocalyptic number.

It is an amenable number.

400340364 is an abundant number, since it is smaller than the sum of its proper divisors (533787180).

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

400340364 is a wasteful number, since it uses less digits than its factorization.

400340364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33361704 (or 33361702 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 400340364 is about 20008.5072906501. The cubic root of 400340364 is about 737.0152257630.

Adding to 400340364 its reverse (463043004), we get a palindrome (863383368).

The spelling of 400340364 in words is "four hundred million, three hundred forty thousand, three hundred sixty-four".