400404324379 has 2 divisors, whose sum is σ = 400404324380. Its totient is φ = 400404324378.

The previous prime is 400404324347. The next prime is 400404324403. The reversal of 400404324379 is 973423404004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400404324379 - 2⁵ = 400404324347 is a prime.

It is not a weakly prime, because it can be changed into another prime (400404324079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200202162189 + 200202162190.

It is an arithmetic number, because the mean of its divisors is an integer number (200202162190).

Almost surely, 2^400404324379 is an apocalyptic number.

400404324379 is a deficient number, since it is larger than the sum of its proper divisors (1).

400404324379 is an equidigital number, since it uses as much as digits as its factorization.

400404324379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 400404324379 in words is "four hundred billion, four hundred four million, three hundred twenty-four thousand, three hundred seventy-nine".