400354007 has 2 divisors, whose sum is σ = 400354008. Its totient is φ = 400354006.

The previous prime is 400353979. The next prime is 400354013. The reversal of 400354007 is 700453004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400354007 - 2²⁸ = 131918551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400353007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200177003 + 200177004.

It is an arithmetic number, because the mean of its divisors is an integer number (200177004).

Almost surely, 2^400354007 is an apocalyptic number.

400354007 is a deficient number, since it is larger than the sum of its proper divisors (1).

400354007 is an equidigital number, since it uses as much as digits as its factorization.

400354007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 400354007 is about 20008.8482177261. The cubic root of 400354007 is about 737.0235977929.

The spelling of 400354007 in words is "four hundred million, three hundred fifty-four thousand, seven".