191444104 has 8 divisors (see below), whose sum is σ = 358957710. Its totient is φ = 95722048.

The previous prime is 191444101. The next prime is 191444117. The reversal of 191444104 is 401444191.

It can be written as a sum of positive squares in only one way, i.e., 170302500 + 21141604 = 13050^2 + 4598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (191444101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11965249 + ... + 11965264.

Almost surely, 2^191444104 is an apocalyptic number.

It is an amenable number.

191444104 is a deficient number, since it is larger than the sum of its proper divisors (167513606).

191444104 is a wasteful number, since it uses less digits than its factorization.

191444104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23930519 (or 23930515 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 191444104 is about 13836.3327511303. The cubic root of 191444104 is about 576.3425255036.

Adding to 191444104 its reverse (401444191), we get a palindrome (592888295).

The spelling of 191444104 in words is "one hundred ninety-one million, four hundred forty-four thousand, one hundred four".