29139946 has 12 divisors (see below), whose sum is σ = 48045186. Its totient is φ = 13245320.

The previous prime is 29139941. The next prime is 29139949. The reversal of 29139946 is 64993192.

It can be written as a sum of positive squares in only one way, i.e., 14737921 + 14402025 = 3839^2 + 3795^2 .

It is not an unprimeable number, because it can be changed into a prime (29139941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59965 + ... + 60448.

Almost surely, 2^29139946 is an apocalyptic number.

29139946 is a deficient number, since it is larger than the sum of its proper divisors (18905240).

29139946 is a wasteful number, since it uses less digits than its factorization.

29139946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120437 (or 120426 counting only the distinct ones).

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

The square root of 29139946 is about 5398.1428287884. The cubic root of 29139946 is about 307.7250948427.

The spelling of 29139946 in words is "twenty-nine million, one hundred thirty-nine thousand, nine hundred forty-six".