83513969 has 32 divisors (see below), whose sum is σ = 109486080. Its totient is φ = 61804800.

The previous prime is 83513953. The next prime is 83513977. The reversal of 83513969 is 96931538.

It is a cyclic number.

It is not a de Polignac number, because 83513969 - 2⁴ = 83513953 is a prime.

It is a super-2 number, since 2×83513969² = 13949166036265922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (83513929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140537 + ... + 141129.

It is an arithmetic number, because the mean of its divisors is an integer number (3421440).

Almost surely, 2^83513969 is an apocalyptic number.

It is an amenable number.

83513969 is a deficient number, since it is larger than the sum of its proper divisors (25972111).

83513969 is a wasteful number, since it uses less digits than its factorization.

83513969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its digits is 174960, while the sum is 44.

The square root of 83513969 is about 9138.5977589562. The cubic root of 83513969 is about 437.1056041875.

Subtracting 83513969 from its reverse (96931538), we obtain a square (13417569 = 3663²).

The spelling of 83513969 in words is "eighty-three million, five hundred thirteen thousand, nine hundred sixty-nine".