3394729780 has 24 divisors (see below), whose sum is σ = 7677312552. Its totient is φ = 1253438592.

The previous prime is 3394729757. The next prime is 3394729783. The reversal of 3394729780 is 879274933.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 311593104 + 3083136676 = 17652^2 + 55526^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3394729783) 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, 6528067 + ... + 6528586.

It is an arithmetic number, because the mean of its divisors is an integer number (319888023).

Almost surely, 2^3394729780 is an apocalyptic number.

It is an amenable number.

3394729780 is an abundant number, since it is smaller than the sum of its proper divisors (4282582772).

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

3394729780 is a wasteful number, since it uses less digits than its factorization.

3394729780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056675 (or 13056673 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 3394729780 is about 58264.3096586581. The cubic root of 3394729780 is about 1502.9172531152.

The spelling of 3394729780 in words is "three billion, three hundred ninety-four million, seven hundred twenty-nine thousand, seven hundred eighty".