73842391 has 8 divisors (see below), whose sum is σ = 85775264. Its totient is φ = 62255520.

The previous prime is 73842331. The next prime is 73842401. The reversal of 73842391 is 19324837.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73842391 - 2¹⁹ = 73318103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73842391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73842331) 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 7 ways as a sum of consecutive naturals, for example, 86040 + ... + 86893.

It is an arithmetic number, because the mean of its divisors is an integer number (10721908).

Almost surely, 2^73842391 is an apocalyptic number.

73842391 is a deficient number, since it is larger than the sum of its proper divisors (11932873).

73842391 is a wasteful number, since it uses less digits than its factorization.

73842391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173001.

The product of its digits is 36288, while the sum is 37.

The square root of 73842391 is about 8593.1595469885. The cubic root of 73842391 is about 419.5353724358.

The spelling of 73842391 in words is "seventy-three million, eight hundred forty-two thousand, three hundred ninety-one".