83901887 has 2 divisors, whose sum is σ = 83901888. Its totient is φ = 83901886.

The previous prime is 83901877. The next prime is 83901931. The reversal of 83901887 is 78810938.

It is an a-pointer prime, because the next prime (83901931) can be obtained adding 83901887 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83901887 - 2¹⁰ = 83900863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83901827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41950943 + 41950944.

It is an arithmetic number, because the mean of its divisors is an integer number (41950944).

Almost surely, 2^83901887 is an apocalyptic number.

83901887 is a deficient number, since it is larger than the sum of its proper divisors (1).

83901887 is an equidigital number, since it uses as much as digits as its factorization.

83901887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 83901887 is about 9159.7973230853. The cubic root of 83901887 is about 437.7813365430.

The spelling of 83901887 in words is "eighty-three million, nine hundred one thousand, eight hundred eighty-seven".