189249797 has 8 divisors (see below), whose sum is σ = 218598912. Its totient is φ = 161924800.

The previous prime is 189249743. The next prime is 189249811. The reversal of 189249797 is 797942981.

189249797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189249797 - 2¹⁴ = 189233413 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 (189249707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505829 + ... + 506202.

It is an arithmetic number, because the mean of its divisors is an integer number (27324864).

Almost surely, 2^189249797 is an apocalyptic number.

189249797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

189249797 is a deficient number, since it is larger than the sum of its proper divisors (29349115).

189249797 is a wasteful number, since it uses less digits than its factorization.

189249797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012059.

The product of its digits is 2286144, while the sum is 56.

The square root of 189249797 is about 13756.8091140351. The cubic root of 189249797 is about 574.1320712901.

The spelling of 189249797 in words is "one hundred eighty-nine million, two hundred forty-nine thousand, seven hundred ninety-seven".