29139402 has 8 divisors (see below), whose sum is σ = 58278816. Its totient is φ = 9713132.

The previous prime is 29139373. The next prime is 29139437. The reversal of 29139402 is 20493192.

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

29139402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 29139402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2428278 + ... + 2428289.

It is an arithmetic number, because the mean of its divisors is an integer number (7284852).

Almost surely, 2^29139402 is an apocalyptic number.

29139402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29139402 is a wasteful number, since it uses less digits than its factorization.

29139402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856572.

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

The square root of 29139402 is about 5398.0924408535. The cubic root of 29139402 is about 307.7231799055.

It can be divided in two parts, 291 and 39402, that added together give a palindrome (39693).

The spelling of 29139402 in words is "twenty-nine million, one hundred thirty-nine thousand, four hundred two".