83149869 has 24 divisors (see below), whose sum is σ = 122721760. Its totient is φ = 50038560.

The previous prime is 83149849. The next prime is 83149877. The reversal of 83149869 is 96894138.

It is not a de Polignac number, because 83149869 - 2⁷ = 83149741 is a prime.

It is a super-2 number, since 2×83149869² = 13827801429434322, which 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 (83149819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56262 + ... + 57720.

Almost surely, 2^83149869 is an apocalyptic number.

It is an amenable number.

83149869 is a deficient number, since it is larger than the sum of its proper divisors (39571891).

83149869 is a wasteful number, since it uses less digits than its factorization.

83149869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1630 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 83149869 is about 9118.6549995051. The cubic root of 83149869 is about 436.4694551330.

The spelling of 83149869 in words is "eighty-three million, one hundred forty-nine thousand, eight hundred sixty-nine".