9279820990 has 16 divisors (see below), whose sum is σ = 18222194160. Its totient is φ = 3374480320.

The previous prime is 9279820973. The next prime is 9279820999. The reversal of 9279820990 is 990289729.

It is a super-2 number, since 2×9279820990² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9279820999) 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, 42180895 + ... + 42181114.

It is an arithmetic number, because the mean of its divisors is an integer number (1138887135).

Almost surely, 2^9279820990 is an apocalyptic number.

9279820990 is a deficient number, since it is larger than the sum of its proper divisors (8942373170).

9279820990 is a wasteful number, since it uses less digits than its factorization.

9279820990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84362027.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 9279820990 is about 96331.8275026484. The cubic root of 9279820990 is about 2101.4216367728.

The spelling of 9279820990 in words is "nine billion, two hundred seventy-nine million, eight hundred twenty thousand, nine hundred ninety".