2979432521 has 4 divisors (see below), whose sum is σ = 3208619652. Its totient is φ = 2750245392.

The previous prime is 2979432517. The next prime is 2979432523. The reversal of 2979432521 is 1252349792.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1296792121 + 1682640400 = 36011^2 + 41020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979432521 - 2² = 2979432517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979432523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114593546 + ... + 114593571.

It is an arithmetic number, because the mean of its divisors is an integer number (802154913).

Almost surely, 2^2979432521 is an apocalyptic number.

It is an amenable number.

2979432521 is a deficient number, since it is larger than the sum of its proper divisors (229187131).

2979432521 is a wasteful number, since it uses less digits than its factorization.

2979432521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229187130.

The product of its digits is 272160, while the sum is 44.

The square root of 2979432521 is about 54584.1783028745. The cubic root of 2979432521 is about 1438.9460718344.

The spelling of 2979432521 in words is "two billion, nine hundred seventy-nine million, four hundred thirty-two thousand, five hundred twenty-one".