29149639 has 4 divisors (see below), whose sum is σ = 29277160. Its totient is φ = 29022120.

The previous prime is 29149633. The next prime is 29149663. The reversal of 29149639 is 93694192.

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 29149639 - 2⁷ = 29149511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29149595 and 29149604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29149633) 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, 63417 + ... + 63874.

It is an arithmetic number, because the mean of its divisors is an integer number (7319290).

Almost surely, 2^29149639 is an apocalyptic number.

29149639 is a deficient number, since it is larger than the sum of its proper divisors (127521).

29149639 is a wasteful number, since it uses less digits than its factorization.

29149639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127520.

The product of its digits is 104976, while the sum is 43.

The square root of 29149639 is about 5399.0405629149. The cubic root of 29149639 is about 307.7592112257.

The spelling of 29149639 in words is "twenty-nine million, one hundred forty-nine thousand, six hundred thirty-nine".