83900281 has 8 divisors (see below), whose sum is σ = 85726784. Its totient is φ = 82090800.

The previous prime is 83900269. The next prime is 83900317. The reversal of 83900281 is 18200938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83900281 - 2⁵ = 83900249 is a prime.

It is a super-2 number, since 2×83900281² = 14078514303757922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83900231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5971 + ... + 14263.

It is an arithmetic number, because the mean of its divisors is an integer number (10715848).

Almost surely, 2^83900281 is an apocalyptic number.

It is an amenable number.

83900281 is a deficient number, since it is larger than the sum of its proper divisors (1826503).

83900281 is a wasteful number, since it uses less digits than its factorization.

83900281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 83900281 is about 9159.7096569706. The cubic root of 83900281 is about 437.7785432752.

The spelling of 83900281 in words is "eighty-three million, nine hundred thousand, two hundred eighty-one".