789408853987 has 16 divisors (see below), whose sum is σ = 874268004960. Its totient is φ = 708254606592.

The previous prime is 789408853969. The next prime is 789408854009. The reversal of 789408853987 is 789358804987.

It is a happy number.

It is not a de Polignac number, because 789408853987 - 2³¹ = 787261370339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789408853957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5280162 + ... + 5427607.

It is an arithmetic number, because the mean of its divisors is an integer number (54641750310).

Almost surely, 2^789408853987 is an apocalyptic number.

789408853987 is a deficient number, since it is larger than the sum of its proper divisors (84859150973).

789408853987 is a wasteful number, since it uses less digits than its factorization.

789408853987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10707942.

The product of its (nonzero) digits is 975421440, while the sum is 76.

The spelling of 789408853987 in words is "seven hundred eighty-nine billion, four hundred eight million, eight hundred fifty-three thousand, nine hundred eighty-seven".