7949897 has 4 divisors (see below), whose sum is σ = 8417556. Its totient is φ = 7482240.

The previous prime is 7949891. The next prime is 7949899. The reversal of 7949897 is 7989497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7989497 = 83 ⋅96259.

It can be written as a sum of positive squares in 2 ways, for example, as 6056521 + 1893376 = 2461^2 + 1376^2 .

It is a cyclic number.

It is not a de Polignac number, because 7949897 - 2⁶ = 7949833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7949891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233804 + ... + 233837.

It is an arithmetic number, because the mean of its divisors is an integer number (2104389).

Almost surely, 2^7949897 is an apocalyptic number.

It is an amenable number.

7949897 is a deficient number, since it is larger than the sum of its proper divisors (467659).

7949897 is a wasteful number, since it uses less digits than its factorization.

7949897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467658.

The product of its digits is 1143072, while the sum is 53.

The square root of 7949897 is about 2819.5561707474. The cubic root of 7949897 is about 199.5816003189.

The spelling of 7949897 in words is "seven million, nine hundred forty-nine thousand, eight hundred ninety-seven".