73149729 has 16 divisors (see below), whose sum is σ = 103299072. Its totient is φ = 45947088.

The previous prime is 73149709. The next prime is 73149731. The reversal of 73149729 is 92794137.

It is not a de Polignac number, because 73149729 - 2⁵ = 73149697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73149709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3289 + ... + 12534.

It is an arithmetic number, because the mean of its divisors is an integer number (6456192).

Almost surely, 2^73149729 is an apocalyptic number.

It is an amenable number.

73149729 is a deficient number, since it is larger than the sum of its proper divisors (30149343).

73149729 is a wasteful number, since it uses less digits than its factorization.

73149729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916.

The product of its digits is 95256, while the sum is 42.

The square root of 73149729 is about 8552.7614838717. The cubic root of 73149729 is about 418.2194634424.

The spelling of 73149729 in words is "seventy-three million, one hundred forty-nine thousand, seven hundred twenty-nine".