83989701 has 6 divisors (see below), whose sum is σ = 121318470. Its totient is φ = 55993128.

The previous prime is 83989693. The next prime is 83989739. The reversal of 83989701 is 10798938.

It can be written as a sum of positive squares in only one way, i.e., 45239076 + 38750625 = 6726^2 + 6225^2 .

It is not a de Polignac number, because 83989701 - 2³ = 83989693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83989751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4666086 + ... + 4666103.

It is an arithmetic number, because the mean of its divisors is an integer number (20219745).

Almost surely, 2^83989701 is an apocalyptic number.

It is an amenable number.

83989701 is a deficient number, since it is larger than the sum of its proper divisors (37328769).

83989701 is a wasteful number, since it uses less digits than its factorization.

83989701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9332195 (or 9332192 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 83989701 is about 9164.5895161758. The cubic root of 83989701 is about 437.9340145796.

The spelling of 83989701 in words is "eighty-three million, nine hundred eighty-nine thousand, seven hundred one".