11969870 has 64 divisors (see below), whose sum is σ = 25707456. Its totient is φ = 3962880.

The previous prime is 11969857. The next prime is 11969879. The reversal of 11969870 is 7896911.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11969879) 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 31 ways as a sum of consecutive naturals, for example, 69104 + ... + 69276.

It is an arithmetic number, because the mean of its divisors is an integer number (401679).

Almost surely, 2^11969870 is an apocalyptic number.

11969870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11969870 is an abundant number, since it is smaller than the sum of its proper divisors (13737586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11969870 is a wasteful number, since it uses less digits than its factorization.

11969870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 11969870 is about 3459.7499909676. The cubic root of 11969870 is about 228.7510754725.

The spelling of 11969870 in words is "eleven million, nine hundred sixty-nine thousand, eight hundred seventy".