2429639 has 4 divisors (see below), whose sum is σ = 2432856. Its totient is φ = 2426424.

The previous prime is 2429633. The next prime is 2429653. The reversal of 2429639 is 9369242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2429639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2429599 and 2429608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2429633) 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, 212 + ... + 2214.

It is an arithmetic number, because the mean of its divisors is an integer number (608214).

2^2429639 is an apocalyptic number.

2429639 is a deficient number, since it is larger than the sum of its proper divisors (3217).

2429639 is a wasteful number, since it uses less digits than its factorization.

2429639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216.

The product of its digits is 23328, while the sum is 35.

The square root of 2429639 is about 1558.7299317072. The cubic root of 2429639 is about 134.4354845069.

The spelling of 2429639 in words is "two million, four hundred twenty-nine thousand, six hundred thirty-nine".