73409902 has 4 divisors (see below), whose sum is σ = 110114856. Its totient is φ = 36704950.

The previous prime is 73409879. The next prime is 73409923. The reversal of 73409902 is 20990437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20990437 = 13 ⋅1614649.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18352474 + ... + 18352477.

It is an arithmetic number, because the mean of its divisors is an integer number (27528714).

Almost surely, 2^73409902 is an apocalyptic number.

73409902 is a deficient number, since it is larger than the sum of its proper divisors (36704954).

73409902 is a wasteful number, since it uses less digits than its factorization.

73409902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36704953.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 73409902 is about 8567.9578663763. The cubic root of 73409902 is about 418.7147064039.

The spelling of 73409902 in words is "seventy-three million, four hundred nine thousand, nine hundred two".