72929429 has 4 divisors (see below), whose sum is σ = 76767840. Its totient is φ = 69091020.

The previous prime is 72929411. The next prime is 72929443. The reversal of 72929429 is 92492927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72929429 - 2¹⁶ = 72863893 is a prime.

It is a super-2 number, since 2×72929429² = 10637403228532082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72929429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72929449) 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 3 ways as a sum of consecutive naturals, for example, 1919177 + ... + 1919214.

It is an arithmetic number, because the mean of its divisors is an integer number (19191960).

Almost surely, 2^72929429 is an apocalyptic number.

It is an amenable number.

72929429 is a deficient number, since it is larger than the sum of its proper divisors (3838411).

72929429 is a wasteful number, since it uses less digits than its factorization.

72929429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838410.

The product of its digits is 163296, while the sum is 44.

The square root of 72929429 is about 8539.8728913257. The cubic root of 72929429 is about 417.7992003506.

The spelling of 72929429 in words is "seventy-two million, nine hundred twenty-nine thousand, four hundred twenty-nine".