73409449 has 2 divisors, whose sum is σ = 73409450. Its totient is φ = 73409448.

The previous prime is 73409419. The next prime is 73409461. The reversal of 73409449 is 94490437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72369049 + 1040400 = 8507^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 73409449 - 2⁷ = 73409321 is a prime.

It is not a weakly prime, because it can be changed into another prime (73409419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36704724 + 36704725.

It is an arithmetic number, because the mean of its divisors is an integer number (36704725).

Almost surely, 2^73409449 is an apocalyptic number.

It is an amenable number.

73409449 is a deficient number, since it is larger than the sum of its proper divisors (1).

73409449 is an equidigital number, since it uses as much as digits as its factorization.

73409449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 73409449 is about 8567.9314306313. The cubic root of 73409449 is about 418.7138451298.

The spelling of 73409449 in words is "seventy-three million, four hundred nine thousand, four hundred forty-nine".