2684940449 has 4 divisors (see below), whose sum is σ = 2711007936. Its totient is φ = 2658872964.

The previous prime is 2684940431. The next prime is 2684940463. The reversal of 2684940449 is 9440494862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2684940449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2684940397 and 2684940406.

It is not an unprimeable number, because it can be changed into a prime (2684940149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13033589 + ... + 13033794.

It is an arithmetic number, because the mean of its divisors is an integer number (677751984).

Almost surely, 2^2684940449 is an apocalyptic number.

It is an amenable number.

2684940449 is a deficient number, since it is larger than the sum of its proper divisors (26067487).

2684940449 is a wasteful number, since it uses less digits than its factorization.

2684940449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26067486.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 2684940449 is about 51816.4110007631. The cubic root of 2684940449 is about 1389.8829239074.

The spelling of 2684940449 in words is "two billion, six hundred eighty-four million, nine hundred forty thousand, four hundred forty-nine".