7011989 has 4 divisors (see below), whose sum is σ = 7074156. Its totient is φ = 6949824.

The previous prime is 7011947. The next prime is 7012001. The reversal of 7011989 is 9891107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9891107 = 181 ⋅54647.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 6041764 = 985^2 + 2458^2 .

It is a cyclic number.

It is not a de Polignac number, because 7011989 - 2⁸ = 7011733 is a prime.

It is a super-2 number, since 2×7011989² = 98335979472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7011919) 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, 30914 + ... + 31139.

It is an arithmetic number, because the mean of its divisors is an integer number (1768539).

Almost surely, 2^7011989 is an apocalyptic number.

It is an amenable number.

7011989 is a deficient number, since it is larger than the sum of its proper divisors (62167).

7011989 is a wasteful number, since it uses less digits than its factorization.

7011989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62166.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 7011989 is about 2648.0160498003. The cubic root of 7011989 is about 191.4022661400.

It can be divided in two parts, 7011 and 989, that added together give a cube (8000 = 20³).

The spelling of 7011989 in words is "seven million, eleven thousand, nine hundred eighty-nine".