83789087 has 4 divisors (see below), whose sum is σ = 83829720. Its totient is φ = 83748456.

The previous prime is 83789029. The next prime is 83789099. The reversal of 83789087 is 78098738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78098738 = 2 ⋅39049369.

It is a cyclic number.

It is not a de Polignac number, because 83789087 - 2¹⁰ = 83788063 is a prime.

It is a super-2 number, since 2×83789087² = 14041222200587138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83789287) 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, 17048 + ... + 21405.

It is an arithmetic number, because the mean of its divisors is an integer number (20957430).

Almost surely, 2^83789087 is an apocalyptic number.

83789087 is a deficient number, since it is larger than the sum of its proper divisors (40633).

83789087 is a wasteful number, since it uses less digits than its factorization.

83789087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40632.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 83789087 is about 9153.6379106888. The cubic root of 83789087 is about 437.5850601415.

The spelling of 83789087 in words is "eighty-three million, seven hundred eighty-nine thousand, eighty-seven".