2933981 has 4 divisors (see below), whose sum is σ = 2971200. Its totient is φ = 2896764.

The previous prime is 2933971. The next prime is 2933993. The reversal of 2933981 is 1893392.

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 not a de Polignac number, because 2933981 - 2¹⁰ = 2932957 is a prime.

It is a super-2 number, since 2×2933981² = 17216489016722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2933971) 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, 18491 + ... + 18648.

It is an arithmetic number, because the mean of its divisors is an integer number (742800).

2^2933981 is an apocalyptic number.

It is an amenable number.

2933981 is a deficient number, since it is larger than the sum of its proper divisors (37219).

2933981 is an equidigital number, since it uses as much as digits as its factorization.

2933981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37218.

The product of its digits is 11664, while the sum is 35.

The square root of 2933981 is about 1712.8867446507. The cubic root of 2933981 is about 143.1591460135.

The spelling of 2933981 in words is "two million, nine hundred thirty-three thousand, nine hundred eighty-one".