8519399101 has 4 divisors (see below), whose sum is σ = 8520870492. Its totient is φ = 8517927712.

The previous prime is 8519399069. The next prime is 8519399131. The reversal of 8519399101 is 1019939158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4525791076 + 3993608025 = 67274^2 + 63195^2 .

It is a cyclic number.

It is not a de Polignac number, because 8519399101 - 2⁵ = 8519399069 is a prime.

It is a super-2 number, since 2×8519399101² (a number of 21 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 (8519399131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726976 + ... + 738601.

It is an arithmetic number, because the mean of its divisors is an integer number (2130217623).

Almost surely, 2^8519399101 is an apocalyptic number.

It is an amenable number.

8519399101 is a deficient number, since it is larger than the sum of its proper divisors (1471391).

8519399101 is a wasteful number, since it uses less digits than its factorization.

8519399101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471390.

The product of its (nonzero) digits is 87480, while the sum is 46.

The square root of 8519399101 is about 92300.5910111089. The cubic root of 8519399101 is about 2042.3789289858.

The spelling of 8519399101 in words is "eight billion, five hundred nineteen million, three hundred ninety-nine thousand, one hundred one".