400536339 has 24 divisors (see below), whose sum is σ = 636401808. Its totient is φ = 223292160.

The previous prime is 400536319. The next prime is 400536341. The reversal of 400536339 is 933635004.

It is not a de Polignac number, because 400536339 - 2¹³ = 400528147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400536319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27202 + ... + 39255.

It is an arithmetic number, because the mean of its divisors is an integer number (26516742).

Almost surely, 2^400536339 is an apocalyptic number.

400536339 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

400536339 is a deficient number, since it is larger than the sum of its proper divisors (235865469).

400536339 is a wasteful number, since it uses less digits than its factorization.

400536339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66515 (or 66508 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 400536339 is about 20013.4039833308. The cubic root of 400536339 is about 737.1354676122.

The spelling of 400536339 in words is "four hundred million, five hundred thirty-six thousand, three hundred thirty-nine".