83893897 has 4 divisors (see below), whose sum is σ = 86786820. Its totient is φ = 81000976.

The previous prime is 83893891. The next prime is 83893951. The reversal of 83893897 is 79839838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23970816 + 59923081 = 4896^2 + 7741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83893897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83893891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1446418 + ... + 1446475.

It is an arithmetic number, because the mean of its divisors is an integer number (21696705).

Almost surely, 2^83893897 is an apocalyptic number.

It is an amenable number.

83893897 is a deficient number, since it is larger than the sum of its proper divisors (2892923).

83893897 is a wasteful number, since it uses less digits than its factorization.

83893897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892922.

The product of its digits is 2612736, while the sum is 55.

The square root of 83893897 is about 9159.3611676798. The cubic root of 83893897 is about 437.7674394224.

The spelling of 83893897 in words is "eighty-three million, eight hundred ninety-three thousand, eight hundred ninety-seven".