2972921 has 8 divisors (see below), whose sum is σ = 3413760. Its totient is φ = 2536128.

The previous prime is 2972903. The next prime is 2972939. The reversal of 2972921 is 1292792.

It is an interprime number because it is at equal distance from previous prime (2972903) and next prime (2972939).

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

It is not a de Polignac number, because 2972921 - 2¹⁰ = 2971897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972971) 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, 785 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (426720).

2^2972921 is an apocalyptic number.

It is an amenable number.

2972921 is a deficient number, since it is larger than the sum of its proper divisors (440839).

2972921 is a wasteful number, since it uses less digits than its factorization.

2972921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023.

The product of its digits is 4536, while the sum is 32.

The square root of 2972921 is about 1724.2160537473. The cubic root of 2972921 is about 143.7897039665.

The spelling of 2972921 in words is "two million, nine hundred seventy-two thousand, nine hundred twenty-one".