189469489 has 16 divisors (see below), whose sum is σ = 219142656. Its totient is φ = 162172800.

The previous prime is 189469459. The next prime is 189469507. The reversal of 189469489 is 984964981.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 189469489 - 2¹¹ = 189467441 is a prime.

It is a super-2 number, since 2×189469489² = 71797374523842242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189469429) 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 15 ways as a sum of consecutive naturals, for example, 5109 + ... + 20125.

It is an arithmetic number, because the mean of its divisors is an integer number (13696416).

Almost surely, 2^189469489 is an apocalyptic number.

It is an amenable number.

189469489 is a deficient number, since it is larger than the sum of its proper divisors (29673167).

189469489 is a wasteful number, since it uses less digits than its factorization.

189469489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15096.

The product of its digits is 4478976, while the sum is 58.

The square root of 189469489 is about 13764.7916439008. The cubic root of 189469489 is about 574.3541471731.

The spelling of 189469489 in words is "one hundred eighty-nine million, four hundred sixty-nine thousand, four hundred eighty-nine".