901945799 has 2 divisors, whose sum is σ = 901945800. Its totient is φ = 901945798.

The previous prime is 901945787. The next prime is 901945819. The reversal of 901945799 is 997549109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 901945799 - 2⁸ = 901945543 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 901945799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901945199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450972899 + 450972900.

It is an arithmetic number, because the mean of its divisors is an integer number (450972900).

Almost surely, 2^901945799 is an apocalyptic number.

901945799 is a deficient number, since it is larger than the sum of its proper divisors (1).

901945799 is an equidigital number, since it uses as much as digits as its factorization.

901945799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 901945799 is about 30032.4124738590. The cubic root of 901945799 is about 966.1846794295.

The spelling of 901945799 in words is "nine hundred one million, nine hundred forty-five thousand, seven hundred ninety-nine".