107987989 has 8 divisors (see below), whose sum is σ = 109080992. Its totient is φ = 106900560.

The previous prime is 107987969. The next prime is 107988011. The reversal of 107987989 is 989789701.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107987989 is a prime.

It is a super-2 number, since 2×107987989² = 23322811536528242, 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 (107987959) 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, 44959 + ... + 47299.

It is an arithmetic number, because the mean of its divisors is an integer number (13635124).

Almost surely, 2^107987989 is an apocalyptic number.

It is an amenable number.

107987989 is a deficient number, since it is larger than the sum of its proper divisors (1093003).

107987989 is a wasteful number, since it uses less digits than its factorization.

107987989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787.

The product of its (nonzero) digits is 2286144, while the sum is 58.

The square root of 107987989 is about 10391.7269498385. The cubic root of 107987989 is about 476.2026609785.

The spelling of 107987989 in words is "one hundred seven million, nine hundred eighty-seven thousand, nine hundred eighty-nine".