899979629 has 2 divisors, whose sum is σ = 899979630. Its totient is φ = 899979628.

The previous prime is 899979611. The next prime is 899979653. The reversal of 899979629 is 926979998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488498404 + 411481225 = 22102^2 + 20285^2 .

It is a cyclic number.

It is not a de Polignac number, because 899979629 - 2⁸ = 899979373 is a prime.

It is a super-2 number, since 2×899979629² = 1619926665229955282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899979329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449989814 + 449989815.

It is an arithmetic number, because the mean of its divisors is an integer number (449989815).

Almost surely, 2^899979629 is an apocalyptic number.

It is an amenable number.

899979629 is a deficient number, since it is larger than the sum of its proper divisors (1).

899979629 is an equidigital number, since it uses as much as digits as its factorization.

899979629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39680928, while the sum is 68.

The square root of 899979629 is about 29999.6604814121. The cubic root of 899979629 is about 965.4821001121.

The spelling of 899979629 in words is "eight hundred ninety-nine million, nine hundred seventy-nine thousand, six hundred twenty-nine".