2930921 has 8 divisors (see below), whose sum is σ = 3526080. Its totient is φ = 2379888.

The previous prime is 2930911. The next prime is 2930947. The reversal of 2930921 is 1290392.

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

It is a de Polignac number, because none of the positive numbers 2^k-2930921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2930911) 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, 10886 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (440760).

2^2930921 is an apocalyptic number.

It is an amenable number.

2930921 is a deficient number, since it is larger than the sum of its proper divisors (595159).

2930921 is a wasteful number, since it uses less digits than its factorization.

2930921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22063.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 2930921 is about 1711.9932826971. The cubic root of 2930921 is about 143.1093593506.

The spelling of 2930921 in words is "two million, nine hundred thirty thousand, nine hundred twenty-one".