2949391 has 4 divisors (see below), whose sum is σ = 3012192. Its totient is φ = 2886592.

The previous prime is 2949377. The next prime is 2949403. The reversal of 2949391 is 1939492.

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

It is a cyclic number.

It is not a de Polignac number, because 2949391 - 2⁷ = 2949263 is a prime.

It is an Ulam number.

It is a Duffinian number.

2949391 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2949391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2949361) 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, 31330 + ... + 31423.

It is an arithmetic number, because the mean of its divisors is an integer number (753048).

2^2949391 is an apocalyptic number.

2949391 is a deficient number, since it is larger than the sum of its proper divisors (62801).

2949391 is an equidigital number, since it uses as much as digits as its factorization.

2949391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62800.

The product of its digits is 17496, while the sum is 37.

The square root of 2949391 is about 1717.3791078268. The cubic root of 2949391 is about 143.4093443359.

It can be divided in two parts, 29493 and 91, that added together give a square (29584 = 172²).

The spelling of 2949391 in words is "two million, nine hundred forty-nine thousand, three hundred ninety-one".