73856749 has 4 divisors (see below), whose sum is σ = 77067936. Its totient is φ = 70645564.

The previous prime is 73856737. The next prime is 73856753. The reversal of 73856749 is 94765837.

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 73856749 - 2¹⁷ = 73725677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73856759) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1605559 + ... + 1605604.

It is an arithmetic number, because the mean of its divisors is an integer number (19266984).

Almost surely, 2^73856749 is an apocalyptic number.

It is an amenable number.

73856749 is a deficient number, since it is larger than the sum of its proper divisors (3211187).

73856749 is a wasteful number, since it uses less digits than its factorization.

73856749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211186.

The product of its digits is 1270080, while the sum is 49.

The square root of 73856749 is about 8593.9949383276. The cubic root of 73856749 is about 419.5625623215.

The spelling of 73856749 in words is "seventy-three million, eight hundred fifty-six thousand, seven hundred forty-nine".