289871974 has 16 divisors (see below), whose sum is σ = 497145600. Its totient is φ = 124175304.

The previous prime is 289871971. The next prime is 289872017. The reversal of 289871974 is 479178982.

It is a happy number.

It is a super-2 number, since 2×289871974² = 168051522621313352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289871971) 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, 50167 + ... + 55645.

It is an arithmetic number, because the mean of its divisors is an integer number (31071600).

Almost surely, 2^289871974 is an apocalyptic number.

289871974 is a deficient number, since it is larger than the sum of its proper divisors (207273626).

289871974 is a wasteful number, since it uses less digits than its factorization.

289871974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9267.

The product of its digits is 2032128, while the sum is 55.

The square root of 289871974 is about 17025.6269781762. The cubic root of 289871974 is about 661.8131761369.

The spelling of 289871974 in words is "two hundred eighty-nine million, eight hundred seventy-one thousand, nine hundred seventy-four".