789972987 has 8 divisors (see below), whose sum is σ = 1053480960. Its totient is φ = 526556840.

The previous prime is 789972941. The next prime is 789972991. The reversal of 789972987 is 789279987.

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 789972987 - 2⁶ = 789972923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (789972917) 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, 562 + ... + 39752.

It is an arithmetic number, because the mean of its divisors is an integer number (131685120).

Almost surely, 2^789972987 is an apocalyptic number.

789972987 is a deficient number, since it is larger than the sum of its proper divisors (263507973).

789972987 is a wasteful number, since it uses less digits than its factorization.

789972987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45913.

The product of its digits is 32006016, while the sum is 66.

The square root of 789972987 is about 28106.4581012976. The cubic root of 789972987 is about 924.4230098254.

The spelling of 789972987 in words is "seven hundred eighty-nine million, nine hundred seventy-two thousand, nine hundred eighty-seven".