73437389 has 2 divisors, whose sum is σ = 73437390. Its totient is φ = 73437388.

The previous prime is 73437313. The next prime is 73437401. The reversal of 73437389 is 98373437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 198025 = 8558^2 + 445^2 .

It is an emirp because it is prime and its reverse (98373437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73437389 - 2²⁴ = 56660173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73437589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36718694 + 36718695.

It is an arithmetic number, because the mean of its divisors is an integer number (36718695).

Almost surely, 2^73437389 is an apocalyptic number.

It is an amenable number.

73437389 is a deficient number, since it is larger than the sum of its proper divisors (1).

73437389 is an equidigital number, since it uses as much as digits as its factorization.

73437389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The square root of 73437389 is about 8569.5617740932. The cubic root of 73437389 is about 418.7669599131.

The spelling of 73437389 in words is "seventy-three million, four hundred thirty-seven thousand, three hundred eighty-nine".