2919971 has 4 divisors (see below), whose sum is σ = 3091752. Its totient is φ = 2748192.

The previous prime is 2919967. The next prime is 2919989. The reversal of 2919971 is 1799192.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2919971 - 2² = 2919967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2919941) 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, 85865 + ... + 85898.

It is an arithmetic number, because the mean of its divisors is an integer number (772938).

2^2919971 is an apocalyptic number.

2919971 is a deficient number, since it is larger than the sum of its proper divisors (171781).

2919971 is a wasteful number, since it uses less digits than its factorization.

2919971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171780.

The product of its digits is 10206, while the sum is 38.

The square root of 2919971 is about 1708.7922635593. The cubic root of 2919971 is about 142.9309168000.

The spelling of 2919971 in words is "two million, nine hundred nineteen thousand, nine hundred seventy-one".