7290891 has 10 divisors (see below), whose sum is σ = 10891452. Its totient is φ = 4860540.

The previous prime is 7290883. The next prime is 7290893. The reversal of 7290891 is 1980927.

It is a happy number.

It is not a de Polignac number, because 7290891 - 2³ = 7290883 is a prime.

7290891 is a modest number, since divided by 891 gives 729 as remainder.

It is not an unprimeable number, because it can be changed into a prime (7290893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44925 + ... + 45086.

Almost surely, 2^7290891 is an apocalyptic number.

7290891 is a deficient number, since it is larger than the sum of its proper divisors (3600561).

7290891 is an equidigital number, since it uses as much as digits as its factorization.

7290891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90023 (or 90014 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 7290891 is about 2700.1649949586. The cubic root of 7290891 is about 193.9070213749.

Adding to 7290891 its sum of digits (36), we get a palindrome (7290927).

The spelling of 7290891 in words is "seven million, two hundred ninety thousand, eight hundred ninety-one".