189474407 has 4 divisors (see below), whose sum is σ = 194095776. Its totient is φ = 184853040.

The previous prime is 189474361. The next prime is 189474421. The reversal of 189474407 is 704474981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189474407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189474457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310623 + ... + 2310704.

It is an arithmetic number, because the mean of its divisors is an integer number (48523944).

Almost surely, 2^189474407 is an apocalyptic number.

189474407 is a deficient number, since it is larger than the sum of its proper divisors (4621369).

189474407 is an equidigital number, since it uses as much as digits as its factorization.

189474407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621368.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 189474407 is about 13764.9702869276. The cubic root of 189474407 is about 574.3591165734.

The spelling of 189474407 in words is "one hundred eighty-nine million, four hundred seventy-four thousand, four hundred seven".