7981349 has 6 divisors (see below), whose sum is σ = 8423910. Its totient is φ = 7560936.

The previous prime is 7981339. The next prime is 7981397. The reversal of 7981349 is 9431897.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5373124 + 2608225 = 2318^2 + 1615^2 .

It is not a de Polignac number, because 7981349 - 2⁴ = 7981333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981319) 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, 10694 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (1403985).

Almost surely, 2^7981349 is an apocalyptic number.

It is an amenable number.

7981349 is a deficient number, since it is larger than the sum of its proper divisors (442561).

7981349 is a wasteful number, since it uses less digits than its factorization.

7981349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22147 (or 22128 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 7981349 is about 2825.1281386868. The cubic root of 7981349 is about 199.8444540587.

The spelling of 7981349 in words is "seven million, nine hundred eighty-one thousand, three hundred forty-nine".