7170989 has 4 divisors (see below), whose sum is σ = 8195424. Its totient is φ = 6146556.

The previous prime is 7170983. The next prime is 7171019. The reversal of 7170989 is 9890717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7170989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7170983) 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, 512207 + ... + 512220.

It is an arithmetic number, because the mean of its divisors is an integer number (2048856).

Almost surely, 2^7170989 is an apocalyptic number.

It is an amenable number.

7170989 is a deficient number, since it is larger than the sum of its proper divisors (1024435).

7170989 is a wasteful number, since it uses less digits than its factorization.

7170989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024434.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 7170989 is about 2677.8702358404. The cubic root of 7170989 is about 192.8381776896.

The spelling of 7170989 in words is "seven million, one hundred seventy thousand, nine hundred eighty-nine".