273404389 has 2 divisors, whose sum is σ = 273404390. Its totient is φ = 273404388.

The previous prime is 273404347. The next prime is 273404399. The reversal of 273404389 is 983404372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197627364 + 75777025 = 14058^2 + 8705^2 .

It is a cyclic number.

It is not a de Polignac number, because 273404389 - 2¹⁵ = 273371621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273404399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136702194 + 136702195.

It is an arithmetic number, because the mean of its divisors is an integer number (136702195).

Almost surely, 2^273404389 is an apocalyptic number.

It is an amenable number.

273404389 is a deficient number, since it is larger than the sum of its proper divisors (1).

273404389 is an equidigital number, since it uses as much as digits as its factorization.

273404389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 273404389 is about 16534.9444813099. The cubic root of 273404389 is about 649.0355630190.

The spelling of 273404389 in words is "two hundred seventy-three million, four hundred four thousand, three hundred eighty-nine".