9859977299421 has 8 divisors (see below), whose sum is σ = 14607373776960. Its totient is φ = 6573318199596.

The previous prime is 9859977299413. The next prime is 9859977299429. The reversal of 9859977299421 is 1249927799589.

It is a happy number.

9859977299421 is a `hidden beast` number, since 9 + 85 + 9 + 97 + 7 + 29 + 9 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (9859977299413) and next prime (9859977299429).

It is not a de Polignac number, because 9859977299421 - 2³ = 9859977299413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9859977299429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182592172185 + ... + 182592172238.

It is an arithmetic number, because the mean of its divisors is an integer number (1825921722120).

Almost surely, 2^{9859977299421} is an apocalyptic number.

It is an amenable number.

9859977299421 is a deficient number, since it is larger than the sum of its proper divisors (4747396477539).

9859977299421 is a wasteful number, since it uses less digits than its factorization.

9859977299421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365184344432 (or 365184344426 counting only the distinct ones).

The product of its digits is 1851776640, while the sum is 81.

The spelling of 9859977299421 in words is "nine trillion, eight hundred fifty-nine billion, nine hundred seventy-seven million, two hundred ninety-nine thousand, four hundred twenty-one".