190447449 has 4 divisors (see below), whose sum is σ = 253929936. Its totient is φ = 126964964.

The previous prime is 190447417. The next prime is 190447463. The reversal of 190447449 is 944744091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190447449 - 2⁵ = 190447417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190447449.

It is not an unprimeable number, because it can be changed into a prime (190447409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31741239 + ... + 31741244.

It is an arithmetic number, because the mean of its divisors is an integer number (63482484).

Almost surely, 2^190447449 is an apocalyptic number.

It is an amenable number.

190447449 is a deficient number, since it is larger than the sum of its proper divisors (63482487).

190447449 is an equidigital number, since it uses as much as digits as its factorization.

190447449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63482486.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 190447449 is about 13800.2698886652. The cubic root of 190447449 is about 575.3406415095.

The spelling of 190447449 in words is "one hundred ninety million, four hundred forty-seven thousand, four hundred forty-nine".