83020899 has 32 divisors (see below), whose sum is σ = 126380800. Its totient is φ = 48055680.

The previous prime is 83020897. The next prime is 83020901. The reversal of 83020899 is 99802038.

It is an interprime number because it is at equal distance from previous prime (83020897) and next prime (83020901).

It is not a de Polignac number, because 83020899 - 2¹ = 83020897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (83020897) 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, 133812 + ... + 134430.

It is an arithmetic number, because the mean of its divisors is an integer number (3949400).

Almost surely, 2^83020899 is an apocalyptic number.

83020899 is a deficient number, since it is larger than the sum of its proper divisors (43359901).

83020899 is a wasteful number, since it uses less digits than its factorization.

83020899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 83020899 is about 9111.5804885870. The cubic root of 83020899 is about 436.2436756855.

The spelling of 83020899 in words is "eighty-three million, twenty thousand, eight hundred ninety-nine".