400672043 has 2 divisors, whose sum is σ = 400672044. Its totient is φ = 400672042.

The previous prime is 400672021. The next prime is 400672061. The reversal of 400672043 is 340276004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400672043 - 2¹⁴ = 400655659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400372043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200336021 + 200336022.

It is an arithmetic number, because the mean of its divisors is an integer number (200336022).

Almost surely, 2^400672043 is an apocalyptic number.

400672043 is a deficient number, since it is larger than the sum of its proper divisors (1).

400672043 is an equidigital number, since it uses as much as digits as its factorization.

400672043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 400672043 is about 20016.7940240189. The cubic root of 400672043 is about 737.2187067816.

The spelling of 400672043 in words is "four hundred million, six hundred seventy-two thousand, forty-three".