9809377388 has 6 divisors (see below), whose sum is σ = 17166410436. Its totient is φ = 4904688692.

The previous prime is 9809377373. The next prime is 9809377393. The reversal of 9809377388 is 8837739089.

It is a self number, because there is not a number n which added to its sum of digits gives 9809377388.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226172170 + ... + 1226172177.

It is an arithmetic number, because the mean of its divisors is an integer number (2861068406).

Almost surely, 2^9809377388 is an apocalyptic number.

It is an amenable number.

9809377388 is a deficient number, since it is larger than the sum of its proper divisors (7357033048).

9809377388 is a wasteful number, since it uses less digits than its factorization.

9809377388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452344351 (or 2452344349 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 62.

The square root of 9809377388 is about 99042.3010031572. The cubic root of 9809377388 is about 2140.6573073293.

The spelling of 9809377388 in words is "nine billion, eight hundred nine million, three hundred seventy-seven thousand, three hundred eighty-eight".