29139817 has 8 divisors (see below), whose sum is σ = 33427712. Its totient is φ = 24883200.

The previous prime is 29139811. The next prime is 29139823. The reversal of 29139817 is 71893192.

It is an interprime number because it is at equal distance from previous prime (29139811) and next prime (29139823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29139817 - 2¹¹ = 29137769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29139817.

It is not an unprimeable number, because it can be changed into a prime (29139811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5784 + ... + 9577.

It is an arithmetic number, because the mean of its divisors is an integer number (4178464).

Almost surely, 2^29139817 is an apocalyptic number.

It is an amenable number.

29139817 is a deficient number, since it is larger than the sum of its proper divisors (4287895).

29139817 is a wasteful number, since it uses less digits than its factorization.

29139817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15639.

The product of its digits is 27216, while the sum is 40.

The square root of 29139817 is about 5398.1308802214. The cubic root of 29139817 is about 307.7246407513.

The spelling of 29139817 in words is "twenty-nine million, one hundred thirty-nine thousand, eight hundred seventeen".