5919981 has 8 divisors (see below), whose sum is σ = 7929600. Its totient is φ = 3928512.

The previous prime is 5919971. The next prime is 5920003. The reversal of 5919981 is 1899195.

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

It is not a de Polignac number, because 5919981 - 2¹⁵ = 5887213 is a prime.

It is a super-2 number, since 2×5919981² = 70092350080722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5919911) 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 7 ways as a sum of consecutive naturals, for example, 3756 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (991200).

Almost surely, 2^5919981 is an apocalyptic number.

It is an amenable number.

5919981 is a deficient number, since it is larger than the sum of its proper divisors (2009619).

5919981 is a wasteful number, since it uses less digits than its factorization.

5919981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075.

The product of its digits is 29160, while the sum is 42.

The square root of 5919981 is about 2433.1011076402. The cubic root of 5919981 is about 180.9006403987.

The spelling of 5919981 in words is "five million, nine hundred nineteen thousand, nine hundred eighty-one".