899785951 has 2 divisors, whose sum is σ = 899785952. Its totient is φ = 899785950.

The previous prime is 899785937. The next prime is 899785961. The reversal of 899785951 is 159587998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 899785951 - 2⁵ = 899785919 is a prime.

It is a super-2 number, since 2×899785951² = 1619229515233948802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 899785951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899785961) 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, 449892975 + 449892976.

It is an arithmetic number, because the mean of its divisors is an integer number (449892976).

Almost surely, 2^899785951 is an apocalyptic number.

899785951 is a deficient number, since it is larger than the sum of its proper divisors (1).

899785951 is an equidigital number, since it uses as much as digits as its factorization.

899785951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 61.

The square root of 899785951 is about 29996.4323045258. The cubic root of 899785951 is about 965.4128370415.

The spelling of 899785951 in words is "eight hundred ninety-nine million, seven hundred eighty-five thousand, nine hundred fifty-one".