2901221839 has 4 divisors (see below), whose sum is σ = 2913891160. Its totient is φ = 2888552520.

The previous prime is 2901221821. The next prime is 2901221957. The reversal of 2901221839 is 9381221092.

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 2901221839 - 2²¹ = 2899124687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2901221798 and 2901221807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2901221039) 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, 6334317 + ... + 6334774.

It is an arithmetic number, because the mean of its divisors is an integer number (728472790).

Almost surely, 2^2901221839 is an apocalyptic number.

2901221839 is a deficient number, since it is larger than the sum of its proper divisors (12669321).

2901221839 is a wasteful number, since it uses less digits than its factorization.

2901221839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12669320.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 2901221839 is about 53862.9913669859. The cubic root of 2901221839 is about 1426.2433943247.

The spelling of 2901221839 in words is "two billion, nine hundred one million, two hundred twenty-one thousand, eight hundred thirty-nine".