2921969 has 4 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 2908644.

The previous prime is 2921957. The next prime is 2921981. The reversal of 2921969 is 9691292.

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 an interprime number because it is at equal distance from previous prime (2921957) and next prime (2921981).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2921969 is a prime.

It is a super-2 number, since 2×2921969² = 17075805673922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2921929) 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, 6329 + ... + 6774.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

2^2921969 is an apocalyptic number.

It is an amenable number.

2921969 is a deficient number, since it is larger than the sum of its proper divisors (13327).

2921969 is a wasteful number, since it uses less digits than its factorization.

2921969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13326.

The product of its digits is 17496, while the sum is 38.

The square root of 2921969 is about 1709.3767870192. The cubic root of 2921969 is about 142.9635096878.

The spelling of 2921969 in words is "two million, nine hundred twenty-one thousand, nine hundred sixty-nine".