400951099 has 2 divisors, whose sum is σ = 400951100. Its totient is φ = 400951098.

The previous prime is 400951081. The next prime is 400951121. The reversal of 400951099 is 990159004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400951099 - 2⁹ = 400950587 is a prime.

It is not a weakly prime, because it can be changed into another prime (400951039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200475549 + 200475550.

It is an arithmetic number, because the mean of its divisors is an integer number (200475550).

Almost surely, 2^400951099 is an apocalyptic number.

400951099 is a deficient number, since it is larger than the sum of its proper divisors (1).

400951099 is an equidigital number, since it uses as much as digits as its factorization.

400951099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 400951099 is about 20023.7633575709. The cubic root of 400951099 is about 737.3898172654.

The spelling of 400951099 in words is "four hundred million, nine hundred fifty-one thousand, ninety-nine".