189450049 has 4 divisors (see below), whose sum is σ = 189507520. Its totient is φ = 189392580.

The previous prime is 189450047. The next prime is 189450109. The reversal of 189450049 is 940054981.

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 189450049 - 2¹ = 189450047 is a prime.

It is a super-2 number, since 2×189450049² = 71782642132204802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189449993 and 189450020.

It is not an unprimeable number, because it can be changed into a prime (189450047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23469 + ... + 30490.

It is an arithmetic number, because the mean of its divisors is an integer number (47376880).

Almost surely, 2^189450049 is an apocalyptic number.

It is an amenable number.

189450049 is a deficient number, since it is larger than the sum of its proper divisors (57471).

189450049 is an equidigital number, since it uses as much as digits as its factorization.

189450049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57470.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 189450049 is about 13764.0854763402. The cubic root of 189450049 is about 574.3345031544.

The spelling of 189450049 in words is "one hundred eighty-nine million, four hundred fifty thousand, forty-nine".