8147293972 has 6 divisors (see below), whose sum is σ = 14257764458. Its totient is φ = 4073646984.

The previous prime is 8147293951. The next prime is 8147294021. The reversal of 8147293972 is 2793927418.

It can be written as a sum of positive squares in only one way, i.e., 7907477776 + 239816196 = 88924^2 + 15486^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1018411743 + ... + 1018411750.

Almost surely, 2^8147293972 is an apocalyptic number.

It is an amenable number.

8147293972 is a deficient number, since it is larger than the sum of its proper divisors (6110470486).

8147293972 is a wasteful number, since it uses less digits than its factorization.

8147293972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036823497 (or 2036823495 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 8147293972 is about 90262.3618791354. The cubic root of 8147293972 is about 2012.1999272364.

The spelling of 8147293972 in words is "eight billion, one hundred forty-seven million, two hundred ninety-three thousand, nine hundred seventy-two".