3427239981 has 32 divisors (see below), whose sum is σ = 5164790400. Its totient is φ = 2002452480.

The previous prime is 3427239971. The next prime is 3427240057. The reversal of 3427239981 is 1899327243.

It is not a de Polignac number, because 3427239981 - 2⁶ = 3427239917 is a prime.

It is a super-2 number, since 2×3427239981² = 23491947774729760722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3427239981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427239911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733605 + ... + 738261.

It is an arithmetic number, because the mean of its divisors is an integer number (161399700).

Almost surely, 2^3427239981 is an apocalyptic number.

It is an amenable number.

3427239981 is a deficient number, since it is larger than the sum of its proper divisors (1737550419).

3427239981 is a wasteful number, since it uses less digits than its factorization.

3427239981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469.

The product of its digits is 653184, while the sum is 48.

The square root of 3427239981 is about 58542.6338748096. The cubic root of 3427239981 is about 1507.6996655853.

The spelling of 3427239981 in words is "three billion, four hundred twenty-seven million, two hundred thirty-nine thousand, nine hundred eighty-one".