73109401 has 4 divisors (see below), whose sum is σ = 77409972. Its totient is φ = 68808832.

The previous prime is 73109381. The next prime is 73109411. The reversal of 73109401 is 10490137.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46854025 + 26255376 = 6845^2 + 5124^2 .

It is a cyclic number.

It is not a de Polignac number, because 73109401 - 2¹⁷ = 72978329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73109411) 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, 2150260 + ... + 2150293.

It is an arithmetic number, because the mean of its divisors is an integer number (19352493).

Almost surely, 2^73109401 is an apocalyptic number.

It is an amenable number.

73109401 is a deficient number, since it is larger than the sum of its proper divisors (4300571).

73109401 is a wasteful number, since it uses less digits than its factorization.

73109401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300570.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 73109401 is about 8550.4035577276. The cubic root of 73109401 is about 418.1425934610.

Adding to 73109401 its reverse (10490137), we get a palindrome (83599538).

The spelling of 73109401 in words is "seventy-three million, one hundred nine thousand, four hundred one".