7090991 has 8 divisors (see below), whose sum is σ = 7342944. Its totient is φ = 6842880.

The previous prime is 7090981. The next prime is 7091003. The reversal of 7090991 is 1990907.

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 7090991 - 2¹⁴ = 7074607 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 (7090901) 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, 3086 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (917868).

Almost surely, 2^7090991 is an apocalyptic number.

7090991 is a deficient number, since it is larger than the sum of its proper divisors (251953).

7090991 is a wasteful number, since it uses less digits than its factorization.

7090991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 7090991 is about 2662.8914735678. The cubic root of 7090991 is about 192.1184075035.

The spelling of 7090991 in words is "seven million, ninety thousand, nine hundred ninety-one".