899269778997 has 24 divisors (see below), whose sum is σ = 1347400521376. Its totient is φ = 599359107312.

The previous prime is 899269778923. The next prime is 899269779007. The reversal of 899269778997 is 799877962998.

It is not a de Polignac number, because 899269778997 - 2²⁴ = 899253001781 is a prime.

It is a super-2 number, since 2×899269778997² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899269778917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475803 + ... + 1422999.

Almost surely, 2^899269778997 is an apocalyptic number.

It is an amenable number.

899269778997 is a deficient number, since it is larger than the sum of its proper divisors (448130742379).

899269778997 is an equidigital number, since it uses as much as digits as its factorization.

899269778997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951119 (or 951107 counting only the distinct ones).

The product of its digits is 15554923776, while the sum is 90.

The spelling of 899269778997 in words is "eight hundred ninety-nine billion, two hundred sixty-nine million, seven hundred seventy-eight thousand, nine hundred ninety-seven".