2429391 has 4 divisors (see below), whose sum is σ = 3239192. Its totient is φ = 1619592.

The previous prime is 2429381. The next prime is 2429393. The reversal of 2429391 is 1939242.

2429391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2429391 - 2⁹ = 2428879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2429393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404896 + ... + 404901.

It is an arithmetic number, because the mean of its divisors is an integer number (809798).

2^2429391 is an apocalyptic number.

2429391 is a deficient number, since it is larger than the sum of its proper divisors (809801).

2429391 is an equidigital number, since it uses as much as digits as its factorization.

2429391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809800.

The product of its digits is 3888, while the sum is 30.

The square root of 2429391 is about 1558.6503777307. The cubic root of 2429391 is about 134.4309102835.

Subtracting from 2429391 its product of digits (3888), we obtain a triangular number (2425503 = T₂₂₀₂).

The spelling of 2429391 in words is "two million, four hundred twenty-nine thousand, three hundred ninety-one".