899764069 has 2 divisors, whose sum is σ = 899764070. Its totient is φ = 899764068.

The previous prime is 899764037. The next prime is 899764111. The reversal of 899764069 is 960467998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813960900 + 85803169 = 28530^2 + 9263^2 .

It is a cyclic number.

It is not a de Polignac number, because 899764069 - 2⁵ = 899764037 is a prime.

It is a super-2 number, since 2×899764069² = 1619150759726873522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899764009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449882034 + 449882035.

It is an arithmetic number, because the mean of its divisors is an integer number (449882035).

Almost surely, 2^899764069 is an apocalyptic number.

It is an amenable number.

899764069 is a deficient number, since it is larger than the sum of its proper divisors (1).

899764069 is an equidigital number, since it uses as much as digits as its factorization.

899764069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The square root of 899764069 is about 29996.0675589318. The cubic root of 899764069 is about 965.4050109821.

The spelling of 899764069 in words is "eight hundred ninety-nine million, seven hundred sixty-four thousand, sixty-nine".