400434007 has 2 divisors, whose sum is σ = 400434008. Its totient is φ = 400434006.

The previous prime is 400433947. The next prime is 400434011. The reversal of 400434007 is 700434004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400434007 - 2⁷ = 400433879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400434707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200217003 + 200217004.

It is an arithmetic number, because the mean of its divisors is an integer number (200217004).

Almost surely, 2^400434007 is an apocalyptic number.

400434007 is a deficient number, since it is larger than the sum of its proper divisors (1).

400434007 is an equidigital number, since it uses as much as digits as its factorization.

400434007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 400434007 is about 20010.8472334382. The cubic root of 400434007 is about 737.0726859832.

The spelling of 400434007 in words is "four hundred million, four hundred thirty-four thousand, seven".