73009869 has 4 divisors (see below), whose sum is σ = 97346496. Its totient is φ = 48673244.

The previous prime is 73009831. The next prime is 73009873. The reversal of 73009869 is 96890037.

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 73009869 - 2⁹ = 73009357 is a prime.

It is a super-2 number, since 2×73009869² = 10660881942794322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73009869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73009369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12168309 + ... + 12168314.

It is an arithmetic number, because the mean of its divisors is an integer number (24336624).

Almost surely, 2^73009869 is an apocalyptic number.

It is an amenable number.

73009869 is a deficient number, since it is larger than the sum of its proper divisors (24336627).

73009869 is a wasteful number, since it uses less digits than its factorization.

73009869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336626.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 73009869 is about 8544.5812653400. The cubic root of 73009869 is about 417.9527525331.

The spelling of 73009869 in words is "seventy-three million, nine thousand, eight hundred sixty-nine".