7140979 has 4 divisors (see below), whose sum is σ = 7516840. Its totient is φ = 6765120.

The previous prime is 7140977. The next prime is 7140983. The reversal of 7140979 is 9790417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7140979 - 2¹ = 7140977 is a prime.

It is a Duffinian number.

7140979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7140977) 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, 187902 + ... + 187939.

It is an arithmetic number, because the mean of its divisors is an integer number (1879210).

Almost surely, 2^7140979 is an apocalyptic number.

7140979 is a deficient number, since it is larger than the sum of its proper divisors (375861).

7140979 is a wasteful number, since it uses less digits than its factorization.

7140979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375860.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 7140979 is about 2672.2610276693. The cubic root of 7140979 is about 192.5687975830.

The spelling of 7140979 in words is "seven million, one hundred forty thousand, nine hundred seventy-nine".