83861961 has 8 divisors (see below), whose sum is σ = 111885984. Its totient is φ = 55872960.

The previous prime is 83861891. The next prime is 83862001. The reversal of 83861961 is 16916838.

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

It is not a de Polignac number, because 83861961 - 2¹⁰ = 83860937 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (83861161) 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, 2535 + ... + 13196.

It is an arithmetic number, because the mean of its divisors is an integer number (13985748).

Almost surely, 2^83861961 is an apocalyptic number.

It is an amenable number.

83861961 is a deficient number, since it is larger than the sum of its proper divisors (28024023).

83861961 is a wasteful number, since it uses less digits than its factorization.

83861961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17511.

The product of its digits is 62208, while the sum is 42.

The square root of 83861961 is about 9157.6176487119. The cubic root of 83861961 is about 437.7118838702.

The spelling of 83861961 in words is "eighty-three million, eight hundred sixty-one thousand, nine hundred sixty-one".