2945779 has 8 divisors (see below), whose sum is σ = 3119040. Its totient is φ = 2774376.

The previous prime is 2945773. The next prime is 2945807. The reversal of 2945779 is 9775492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2945779 - 2¹⁵ = 2913011 is a prime.

It is a super-2 number, since 2×2945779² = 17355227833682, which contains 22 as substring.

2945779 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2945773) 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, 3972 + ... + 4654.

It is an arithmetic number, because the mean of its divisors is an integer number (389880).

2^2945779 is an apocalyptic number.

2945779 is a deficient number, since it is larger than the sum of its proper divisors (173261).

2945779 is a wasteful number, since it uses less digits than its factorization.

2945779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

The product of its digits is 158760, while the sum is 43.

The square root of 2945779 is about 1716.3271832608. The cubic root of 2945779 is about 143.3507778780.

The spelling of 2945779 in words is "two million, nine hundred forty-five thousand, seven hundred seventy-nine".