400232947 has 2 divisors, whose sum is σ = 400232948. Its totient is φ = 400232946.

The previous prime is 400232941. The next prime is 400232957. The reversal of 400232947 is 749232004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400232947 is a prime.

It is not a weakly prime, because it can be changed into another prime (400232941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200116473 + 200116474.

It is an arithmetic number, because the mean of its divisors is an integer number (200116474).

Almost surely, 2^400232947 is an apocalyptic number.

400232947 is a deficient number, since it is larger than the sum of its proper divisors (1).

400232947 is an equidigital number, since it uses as much as digits as its factorization.

400232947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 400232947 is about 20005.8228273670. The cubic root of 400232947 is about 736.9493026525.

The spelling of 400232947 in words is "four hundred million, two hundred thirty-two thousand, nine hundred forty-seven".