161411399 has 2 divisors, whose sum is σ = 161411400. Its totient is φ = 161411398.

The previous prime is 161411377. The next prime is 161411407. The reversal of 161411399 is 993114161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161411399 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 (161411599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80705699 + 80705700.

It is an arithmetic number, because the mean of its divisors is an integer number (80705700).

Almost surely, 2^161411399 is an apocalyptic number.

161411399 is a deficient number, since it is larger than the sum of its proper divisors (1).

161411399 is an equidigital number, since it uses as much as digits as its factorization.

161411399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 35.

The square root of 161411399 is about 12704.7785891766. The cubic root of 161411399 is about 544.4751550249.

The spelling of 161411399 in words is "one hundred sixty-one million, four hundred eleven thousand, three hundred ninety-nine".