73400087 has 4 divisors (see below), whose sum is σ = 73574856. Its totient is φ = 73225320.

The previous prime is 73400083. The next prime is 73400111. The reversal of 73400087 is 78000437.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73400087 - 2² = 73400083 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 (73400083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86753 + ... + 87594.

It is an arithmetic number, because the mean of its divisors is an integer number (18393714).

Almost surely, 2^73400087 is an apocalyptic number.

73400087 is a deficient number, since it is larger than the sum of its proper divisors (174769).

73400087 is a wasteful number, since it uses less digits than its factorization.

73400087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174768.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 73400087 is about 8567.3850736383. The cubic root of 73400087 is about 418.6960446707.

The spelling of 73400087 in words is "seventy-three million, four hundred thousand, eighty-seven".