7390122779 has 16 divisors (see below), whose sum is σ = 7995097152. Its totient is φ = 6790445568.

The previous prime is 7390122763. The next prime is 7390122793. The reversal of 7390122779 is 9772210937.

It is a cyclic number.

It is not a de Polignac number, because 7390122779 - 2⁴ = 7390122763 is a prime.

It is a super-2 number, since 2×7390122779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7390122799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2987087 + ... + 2989559.

It is an arithmetic number, because the mean of its divisors is an integer number (499693572).

Almost surely, 2^7390122779 is an apocalyptic number.

7390122779 is a deficient number, since it is larger than the sum of its proper divisors (604974373).

7390122779 is a wasteful number, since it uses less digits than its factorization.

7390122779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 7390122779 is about 85965.8233195030. The cubic root of 7390122779 is about 1947.8277611495.

The spelling of 7390122779 in words is "seven billion, three hundred ninety million, one hundred twenty-two thousand, seven hundred seventy-nine".