2973891 has 8 divisors (see below), whose sum is σ = 3992400. Its totient is φ = 1968992.

The previous prime is 2973889. The next prime is 2973913. The reversal of 2973891 is 1983792.

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

It is a cyclic number.

It is not a de Polignac number, because 2973891 - 2¹ = 2973889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2973871) 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, 2880 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (499050).

2^2973891 is an apocalyptic number.

2973891 is a deficient number, since it is larger than the sum of its proper divisors (1018509).

2973891 is a wasteful number, since it uses less digits than its factorization.

2973891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805.

The product of its digits is 27216, while the sum is 39.

The square root of 2973891 is about 1724.4973180611. The cubic root of 2973891 is about 143.8053407590.

Subtracting from 2973891 its reverse (1983792), we obtain a palindrome (990099).

It can be divided in two parts, 29 and 73891, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 2973891 in words is "two million, nine hundred seventy-three thousand, eight hundred ninety-one".