2906491 has 4 divisors (see below), whose sum is σ = 3321712. Its totient is φ = 2491272.

The previous prime is 2906483. The next prime is 2906509. The reversal of 2906491 is 1946092.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2906491 - 2³ = 2906483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2906401) 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 3 ways as a sum of consecutive naturals, for example, 207600 + ... + 207613.

It is an arithmetic number, because the mean of its divisors is an integer number (830428).

2^2906491 is an apocalyptic number.

2906491 is a deficient number, since it is larger than the sum of its proper divisors (415221).

2906491 is an equidigital number, since it uses as much as digits as its factorization.

2906491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415220.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2906491 is about 1704.8433945674. The cubic root of 2906491 is about 142.7106313635.

The spelling of 2906491 in words is "two million, nine hundred six thousand, four hundred ninety-one".