9907719477 has 16 divisors (see below), whose sum is σ = 13253614080. Its totient is φ = 6583514112.

The previous prime is 9907719473. The next prime is 9907719539. The reversal of 9907719477 is 7749177099.

It is not a de Polignac number, because 9907719477 - 2² = 9907719473 is a prime.

It is a super-4 number, since 4×9907719477⁴ (a number of 41 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9907719477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9907719473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920133 + ... + 1925285.

It is an arithmetic number, because the mean of its divisors is an integer number (828350880).

Almost surely, 2^9907719477 is an apocalyptic number.

It is an amenable number.

9907719477 is a deficient number, since it is larger than the sum of its proper divisors (3345894603).

9907719477 is a wasteful number, since it uses less digits than its factorization.

9907719477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its (nonzero) digits is 7001316, while the sum is 60.

The square root of 9907719477 is about 99537.5279831682. The cubic root of 9907719477 is about 2147.7871212018.

The spelling of 9907719477 in words is "nine billion, nine hundred seven million, seven hundred nineteen thousand, four hundred seventy-seven".