11889970 has 16 divisors (see below), whose sum is σ = 22661208. Its totient is φ = 4476160.

The previous prime is 11889961. The next prime is 11889979. The reversal of 11889970 is 7998811.

It is an interprime number because it is at equal distance from previous prime (11889961) and next prime (11889979).

It can be written as a sum of positive squares in 4 ways, for example, as 8696601 + 3193369 = 2949^2 + 1787^2 .

It is not an unprimeable number, because it can be changed into a prime (11889979) 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, 34801 + ... + 35140.

Almost surely, 2^11889970 is an apocalyptic number.

11889970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11889970 is a deficient number, since it is larger than the sum of its proper divisors (10771238).

11889970 is a wasteful number, since it uses less digits than its factorization.

11889970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69965.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 11889970 is about 3448.1835797997. The cubic root of 11889970 is about 228.2409604983.

The spelling of 11889970 in words is "eleven million, eight hundred eighty-nine thousand, nine hundred seventy".