2971828397 has 4 divisors (see below), whose sum is σ = 2971958400. Its totient is φ = 2971698396.

The previous prime is 2971828381. The next prime is 2971828421. The reversal of 2971828397 is 7938281792.

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 2971828397 - 2⁴ = 2971828381 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 (2971828337) 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, 20603 + ... + 79800.

It is an arithmetic number, because the mean of its divisors is an integer number (742989600).

Almost surely, 2^2971828397 is an apocalyptic number.

It is an amenable number.

2971828397 is a deficient number, since it is larger than the sum of its proper divisors (130003).

2971828397 is a wasteful number, since it uses less digits than its factorization.

2971828397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130002.

The product of its digits is 3048192, while the sum is 56.

The square root of 2971828397 is about 54514.4787831637. The cubic root of 2971828397 is about 1437.7208669021.

The spelling of 2971828397 in words is "two billion, nine hundred seventy-one million, eight hundred twenty-eight thousand, three hundred ninety-seven".