400379003 has 2 divisors, whose sum is σ = 400379004. Its totient is φ = 400379002.

The previous prime is 400378991. The next prime is 400379027. The reversal of 400379003 is 300973004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400379003 - 2⁴ = 400378987 is a prime.

It is not a weakly prime, because it can be changed into another prime (400379033) 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, 200189501 + 200189502.

It is an arithmetic number, because the mean of its divisors is an integer number (200189502).

Almost surely, 2^400379003 is an apocalyptic number.

400379003 is a deficient number, since it is larger than the sum of its proper divisors (1).

400379003 is an equidigital number, since it uses as much as digits as its factorization.

400379003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 400379003 is about 20009.4728316365. The cubic root of 400379003 is about 737.0389361003.

The spelling of 400379003 in words is "four hundred million, three hundred seventy-nine thousand, three".