400494299 has 2 divisors, whose sum is σ = 400494300. Its totient is φ = 400494298.

The previous prime is 400494287. The next prime is 400494307. The reversal of 400494299 is 992494004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400494299 - 2²⁴ = 383717083 is a prime.

It is not a weakly prime, because it can be changed into another prime (400494209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200247149 + 200247150.

It is an arithmetic number, because the mean of its divisors is an integer number (200247150).

Almost surely, 2^400494299 is an apocalyptic number.

400494299 is a deficient number, since it is larger than the sum of its proper divisors (1).

400494299 is an equidigital number, since it uses as much as digits as its factorization.

400494299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 400494299 is about 20012.3536596773. The cubic root of 400494299 is about 737.1096769774.

The spelling of 400494299 in words is "four hundred million, four hundred ninety-four thousand, two hundred ninety-nine".