786989972 has 6 divisors (see below), whose sum is σ = 1377232458. Its totient is φ = 393494984.

The previous prime is 786989953. The next prime is 786990031. The reversal of 786989972 is 279989687.

It can be written as a sum of positive squares in only one way, i.e., 768620176 + 18369796 = 27724^2 + 4286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 786989899 and 786989908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98373743 + ... + 98373750.

It is an arithmetic number, because the mean of its divisors is an integer number (229538743).

Almost surely, 2^786989972 is an apocalyptic number.

It is an amenable number.

786989972 is a deficient number, since it is larger than the sum of its proper divisors (590242486).

786989972 is a wasteful number, since it uses less digits than its factorization.

786989972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196747497 (or 196747495 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 65.

The square root of 786989972 is about 28053.3415478442. The cubic root of 786989972 is about 923.2579716962.

The spelling of 786989972 in words is "seven hundred eighty-six million, nine hundred eighty-nine thousand, nine hundred seventy-two".