201394469 has 2 divisors, whose sum is σ = 201394470. Its totient is φ = 201394468.

The previous prime is 201394439. The next prime is 201394477. The reversal of 201394469 is 964493102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111049444 + 90345025 = 10538^2 + 9505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201394469 is a prime.

It is a super-2 number, since 2×201394469² = 81119464287583922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201394409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100697234 + 100697235.

It is an arithmetic number, because the mean of its divisors is an integer number (100697235).

Almost surely, 2^201394469 is an apocalyptic number.

It is an amenable number.

201394469 is a deficient number, since it is larger than the sum of its proper divisors (1).

201394469 is an equidigital number, since it uses as much as digits as its factorization.

201394469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 201394469 is about 14191.3519088211. The cubic root of 201394469 is about 586.1595516964.

The spelling of 201394469 in words is "two hundred one million, three hundred ninety-four thousand, four hundred sixty-nine".