7021889 has 8 divisors (see below), whose sum is σ = 8099520. Its totient is φ = 5962896.

The previous prime is 7021879. The next prime is 7021913. The reversal of 7021889 is 9881207.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7021889 - 2¹² = 7017793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7021879) 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, 3839 + ... + 5364.

It is an arithmetic number, because the mean of its divisors is an integer number (1012440).

Almost surely, 2^7021889 is an apocalyptic number.

It is an amenable number.

7021889 is a deficient number, since it is larger than the sum of its proper divisors (1077631).

7021889 is a wasteful number, since it uses less digits than its factorization.

7021889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9319.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 7021889 is about 2649.8847144734. The cubic root of 7021889 is about 191.4923019991.

It can be divided in two parts, 70218 and 89, that added together give a palindrome (70307).

The spelling of 7021889 in words is "seven million, twenty-one thousand, eight hundred eighty-nine".