129849802 has 4 divisors (see below), whose sum is σ = 194774706. Its totient is φ = 64924900.

The previous prime is 129849773. The next prime is 129849823. The reversal of 129849802 is 208948921.

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

It can be written as a sum of positive squares in only one way, i.e., 80442961 + 49406841 = 8969^2 + 7029^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32462449 + ... + 32462452.

Almost surely, 2^129849802 is an apocalyptic number.

129849802 is a deficient number, since it is larger than the sum of its proper divisors (64924904).

129849802 is an equidigital number, since it uses as much as digits as its factorization.

129849802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64924903.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 129849802 is about 11395.1657293784. The cubic root of 129849802 is about 506.3845311925.

The spelling of 129849802 in words is "one hundred twenty-nine million, eight hundred forty-nine thousand, eight hundred two".