7971969 has 8 divisors (see below), whose sum is σ = 10764160. Its totient is φ = 5247216.

The previous prime is 7971959. The next prime is 7971973. The reversal of 7971969 is 9691797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7971969 - 2⁸ = 7971713 is a prime.

It is a super-2 number, since 2×7971969² = 127104579473922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971919) 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, 16582 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (1345520).

Almost surely, 2^7971969 is an apocalyptic number.

7971969 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

7971969 is a deficient number, since it is larger than the sum of its proper divisors (2792191).

7971969 is a wasteful number, since it uses less digits than its factorization.

7971969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33719.

The product of its digits is 214326, while the sum is 48.

The square root of 7971969 is about 2823.4675489547. The cubic root of 7971969 is about 199.7661349757.

The spelling of 7971969 in words is "seven million, nine hundred seventy-one thousand, nine hundred sixty-nine".