7091397 has 12 divisors (see below), whose sum is σ = 10845900. Its totient is φ = 4449408.

The previous prime is 7091377. The next prime is 7091411. The reversal of 7091397 is 7931907.

It can be written as a sum of positive squares in 2 ways, for example, as 3381921 + 3709476 = 1839^2 + 1926^2 .

It is not a de Polignac number, because 7091397 - 2⁶ = 7091333 is a prime.

It is a super-2 number, since 2×7091397² = 100575822823218, which contains 22 as substring.

7091397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7091317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23022 + ... + 23327.

It is an arithmetic number, because the mean of its divisors is an integer number (903825).

Almost surely, 2^7091397 is an apocalyptic number.

It is an amenable number.

7091397 is a deficient number, since it is larger than the sum of its proper divisors (3754503).

7091397 is a wasteful number, since it uses less digits than its factorization.

7091397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46372 (or 46369 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 7091397 is about 2662.9677053994. The cubic root of 7091397 is about 192.1220740613.

The spelling of 7091397 in words is "seven million, ninety-one thousand, three hundred ninety-seven".