400932479 has 2 divisors, whose sum is σ = 400932480. Its totient is φ = 400932478.

The previous prime is 400932463. The next prime is 400932533. The reversal of 400932479 is 974239004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400932479 - 2⁴ = 400932463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400932409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200466239 + 200466240.

It is an arithmetic number, because the mean of its divisors is an integer number (200466240).

Almost surely, 2^400932479 is an apocalyptic number.

400932479 is a deficient number, since it is larger than the sum of its proper divisors (1).

400932479 is an equidigital number, since it uses as much as digits as its factorization.

400932479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 400932479 is about 20023.2984046086. The cubic root of 400932479 is about 737.3784023980.

The spelling of 400932479 in words is "four hundred million, nine hundred thirty-two thousand, four hundred seventy-nine".