29380639 has 4 divisors (see below), whose sum is σ = 29819224. Its totient is φ = 28942056.

The previous prime is 29380633. The next prime is 29380649. The reversal of 29380639 is 93608392.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29380639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29380633) 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, 219192 + ... + 219325.

It is an arithmetic number, because the mean of its divisors is an integer number (7454806).

Almost surely, 2^29380639 is an apocalyptic number.

29380639 is a deficient number, since it is larger than the sum of its proper divisors (438585).

29380639 is an equidigital number, since it uses as much as digits as its factorization.

29380639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438584.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 29380639 is about 5420.3910375544. The cubic root of 29380639 is about 308.5700320929.

The spelling of 29380639 in words is "twenty-nine million, three hundred eighty thousand, six hundred thirty-nine".