400774007 has 2 divisors, whose sum is σ = 400774008. Its totient is φ = 400774006.

The previous prime is 400773979. The next prime is 400774009. The reversal of 400774007 is 700477004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400774007 - 2⁶ = 400773943 is a prime.

Together with 400774009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400774009) 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 as a sum of consecutive naturals, namely, 200387003 + 200387004.

It is an arithmetic number, because the mean of its divisors is an integer number (200387004).

Almost surely, 2^400774007 is an apocalyptic number.

400774007 is a deficient number, since it is larger than the sum of its proper divisors (1).

400774007 is an equidigital number, since it uses as much as digits as its factorization.

400774007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 400774007 is about 20019.3408233138. The cubic root of 400774007 is about 737.2812378832.

The spelling of 400774007 in words is "four hundred million, seven hundred seventy-four thousand, seven".