289942891 has 8 divisors (see below), whose sum is σ = 331469024. Its totient is φ = 248443200.

The previous prime is 289942879. The next prime is 289942903. The reversal of 289942891 is 198249982.

It is an interprime number because it is at equal distance from previous prime (289942879) and next prime (289942903).

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 289942891 - 2²³ = 281554283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289942091) 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 7 ways as a sum of consecutive naturals, for example, 31741 + ... + 39841.

It is an arithmetic number, because the mean of its divisors is an integer number (41433628).

Almost surely, 2^289942891 is an apocalyptic number.

289942891 is a deficient number, since it is larger than the sum of its proper divisors (41526133).

289942891 is an equidigital number, since it uses as much as digits as its factorization.

289942891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13221.

The product of its digits is 746496, while the sum is 52.

The square root of 289942891 is about 17027.7095053915. The cubic root of 289942891 is about 661.8671424649.

The spelling of 289942891 in words is "two hundred eighty-nine million, nine hundred forty-two thousand, eight hundred ninety-one".