83969901 has 6 divisors (see below), whose sum is σ = 121289870. Its totient is φ = 55979928.

The previous prime is 83969891. The next prime is 83969933. The reversal of 83969901 is 10996938.

It can be written as a sum of positive squares in only one way, i.e., 63584676 + 20385225 = 7974^2 + 4515^2 .

It is not a de Polignac number, because 83969901 - 2⁷ = 83969773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83969971) 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, 4664986 + ... + 4665003.

Almost surely, 2^83969901 is an apocalyptic number.

It is an amenable number.

83969901 is a deficient number, since it is larger than the sum of its proper divisors (37319969).

83969901 is a wasteful number, since it uses less digits than its factorization.

83969901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9329995 (or 9329992 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 83969901 is about 9163.5092077217. The cubic root of 83969901 is about 437.8995985546.

The spelling of 83969901 in words is "eighty-three million, nine hundred sixty-nine thousand, nine hundred one".