193464409 has 2 divisors, whose sum is σ = 193464410. Its totient is φ = 193464408.

The previous prime is 193464391. The next prime is 193464419. The reversal of 193464409 is 904464391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187690000 + 5774409 = 13700^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 193464409 - 2²¹ = 191367257 is a prime.

It is not a weakly prime, because it can be changed into another prime (193464419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96732204 + 96732205.

It is an arithmetic number, because the mean of its divisors is an integer number (96732205).

Almost surely, 2^193464409 is an apocalyptic number.

It is an amenable number.

193464409 is a deficient number, since it is larger than the sum of its proper divisors (1).

193464409 is an equidigital number, since it uses as much as digits as its factorization.

193464409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 193464409 is about 13909.1483923352. The cubic root of 193464409 is about 578.3628116500.

The spelling of 193464409 in words is "one hundred ninety-three million, four hundred sixty-four thousand, four hundred nine".