189849724 has 6 divisors (see below), whose sum is σ = 332237024. Its totient is φ = 94924860.

The previous prime is 189849697. The next prime is 189849731. The reversal of 189849724 is 427948981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 23731212 + ... + 23731219.

Almost surely, 2^189849724 is an apocalyptic number.

It is an amenable number.

189849724 is a deficient number, since it is larger than the sum of its proper divisors (142387300).

189849724 is a wasteful number, since it uses less digits than its factorization.

189849724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47462435 (or 47462433 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 189849724 is about 13778.5965903643. The cubic root of 189849724 is about 574.7381027851.

The spelling of 189849724 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, seven hundred twenty-four".