83887489 has 8 divisors (see below), whose sum is σ = 100917440. Its totient is φ = 68119056.

The previous prime is 83887487. The next prime is 83887513. The reversal of 83887489 is 98478838.

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

It is a cyclic number.

It is not a de Polignac number, because 83887489 - 2¹ = 83887487 is a prime.

It is a super-2 number, since 2×83887489² = 14074221621450242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83887483) 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, 315234 + ... + 315499.

It is an arithmetic number, because the mean of its divisors is an integer number (12614680).

Almost surely, 2^83887489 is an apocalyptic number.

It is an amenable number.

83887489 is a deficient number, since it is larger than the sum of its proper divisors (17029951).

83887489 is a wasteful number, since it uses less digits than its factorization.

83887489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630759.

The product of its digits is 3096576, while the sum is 55.

The square root of 83887489 is about 9159.0113549444. The cubic root of 83887489 is about 437.7562932593.

The spelling of 83887489 in words is "eighty-three million, eight hundred eighty-seven thousand, four hundred eighty-nine".