7947115412 has 6 divisors (see below), whose sum is σ = 13907451978. Its totient is φ = 3973557704.

The previous prime is 7947115387. The next prime is 7947115433. The reversal of 7947115412 is 2145117497.

It can be written as a sum of positive squares in only one way, i.e., 6384968836 + 1562146576 = 79906^2 + 39524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7947115412.

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, 993389423 + ... + 993389430.

It is an arithmetic number, because the mean of its divisors is an integer number (2317908663).

Almost surely, 2^7947115412 is an apocalyptic number.

It is an amenable number.

7947115412 is a deficient number, since it is larger than the sum of its proper divisors (5960336566).

7947115412 is a wasteful number, since it uses less digits than its factorization.

7947115412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986778857 (or 1986778855 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 7947115412 is about 89146.5950667775. The cubic root of 7947115412 is about 1995.5832041374.

The spelling of 7947115412 in words is "seven billion, nine hundred forty-seven million, one hundred fifteen thousand, four hundred twelve".