6942779901 has 12 divisors (see below), whose sum is σ = 10030963228. Its totient is φ = 4627364544.

The previous prime is 6942779897. The next prime is 6942779939. The reversal of 6942779901 is 1099772496.

6942779901 is a `hidden beast` number, since 69 + 427 + 79 + 90 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5138739225 + 1804040676 = 71685^2 + 42474^2 .

It is not a de Polignac number, because 6942779901 - 2² = 6942779897 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 (6942779941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57400 + ... + 131073.

Almost surely, 2^6942779901 is an apocalyptic number.

It is an amenable number.

6942779901 is a deficient number, since it is larger than the sum of its proper divisors (3088183327).

6942779901 is a wasteful number, since it uses less digits than its factorization.

6942779901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192572 (or 192569 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 6942779901 is about 83323.3454741227. The cubic root of 6942779901 is about 1907.7046246143.

The spelling of 6942779901 in words is "six billion, nine hundred forty-two million, seven hundred seventy-nine thousand, nine hundred one".