401004407 has 2 divisors, whose sum is σ = 401004408. Its totient is φ = 401004406.

The previous prime is 401004397. The next prime is 401004433. The reversal of 401004407 is 704400104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401004407 - 2¹⁸ = 400742263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401004707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200502203 + 200502204.

It is an arithmetic number, because the mean of its divisors is an integer number (200502204).

Almost surely, 2^401004407 is an apocalyptic number.

401004407 is a deficient number, since it is larger than the sum of its proper divisors (1).

401004407 is an equidigital number, since it uses as much as digits as its factorization.

401004407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 401004407 is about 20025.0944317374. The cubic root of 401004407 is about 737.4224954270.

The spelling of 401004407 in words is "four hundred one million, four thousand, four hundred seven".