7912197 has 6 divisors (see below), whose sum is σ = 11428742. Its totient is φ = 5274792.

The previous prime is 7912181. The next prime is 7912199.

7912197 is nontrivially palindromic in base 10.

7912197 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4639716 + 3272481 = 2154^2 + 1809^2 .

It is not a de Polignac number, because 7912197 - 2⁴ = 7912181 is a prime.

It is a super-2 number, since 2×7912197² = 125205722733618, 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 (7912199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 439558 + ... + 439575.

Almost surely, 2^7912197 is an apocalyptic number.

It is an amenable number.

7912197 is a deficient number, since it is larger than the sum of its proper divisors (3516545).

7912197 is a wasteful number, since it uses less digits than its factorization.

7912197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879139 (or 879136 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 7912197 is about 2812.8627766032. The cubic root of 7912197 is about 199.2656150275.

The spelling of 7912197 in words is "seven million, nine hundred twelve thousand, one hundred ninety-seven".