83887117 has 4 divisors (see below), whose sum is σ = 83994496. Its totient is φ = 83779740.

The previous prime is 83887099. The next prime is 83887123. The reversal of 83887117 is 71178838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71178838 = 2 ⋅35589419.

It is a cyclic number.

It is not a de Polignac number, because 83887117 - 2²³ = 75498509 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 (83881117) 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, 52509 + ... + 54082.

It is an arithmetic number, because the mean of its divisors is an integer number (20998624).

Almost surely, 2^83887117 is an apocalyptic number.

It is an amenable number.

83887117 is a deficient number, since it is larger than the sum of its proper divisors (107379).

83887117 is a wasteful number, since it uses less digits than its factorization.

83887117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107378.

The product of its digits is 75264, while the sum is 43.

The square root of 83887117 is about 9158.9910470532. The cubic root of 83887117 is about 437.7556461800.

The spelling of 83887117 in words is "eighty-three million, eight hundred eighty-seven thousand, one hundred seventeen".