4092779640 has 32 divisors (see below), whose sum is σ = 12278339280. Its totient is φ = 1091407872.

The previous prime is 4092779629. The next prime is 4092779641. The reversal of 4092779640 is 469772904.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 4092779640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4092779641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17053129 + ... + 17053368.

Almost surely, 2^4092779640 is an apocalyptic number.

4092779640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4092779640 is an abundant number, since it is smaller than the sum of its proper divisors (8185559640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4092779640 is a wasteful number, since it uses less digits than its factorization.

4092779640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34106511 (or 34106507 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 4092779640 is about 63974.8359904111. The cubic root of 4092779640 is about 1599.5805723516.

The spelling of 4092779640 in words is "four billion, ninety-two million, seven hundred seventy-nine thousand, six hundred forty".