1972879449 has 8 divisors (see below), whose sum is σ = 2630712672. Its totient is φ = 1315149600.

The previous prime is 1972879423. The next prime is 1972879453. The reversal of 1972879449 is 9449782791.

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

It is not a de Polignac number, because 1972879449 - 2⁵ = 1972879417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1972879392 and 1972879401.

It is not an unprimeable number, because it can be changed into a prime (1972879409) 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, 53437 + ... + 82469.

It is an arithmetic number, because the mean of its divisors is an integer number (328839084).

Almost surely, 2^1972879449 is an apocalyptic number.

It is an amenable number.

1972879449 is a deficient number, since it is larger than the sum of its proper divisors (657833223).

1972879449 is a wasteful number, since it uses less digits than its factorization.

1972879449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51687.

The product of its digits is 9144576, while the sum is 60.

The square root of 1972879449 is about 44417.1076163228. The cubic root of 1972879449 is about 1254.2001536139.

The spelling of 1972879449 in words is "one billion, nine hundred seventy-two million, eight hundred seventy-nine thousand, four hundred forty-nine".