11959990 has 16 divisors (see below), whose sum is σ = 24603552. Its totient is φ = 4100544.

The previous prime is 11959979. The next prime is 11959999. The reversal of 11959990 is 9995911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11959999) 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, 85359 + ... + 85498.

It is an arithmetic number, because the mean of its divisors is an integer number (1537722).

Almost surely, 2^11959990 is an apocalyptic number.

11959990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11959990 is an abundant number, since it is smaller than the sum of its proper divisors (12643562).

11959990 is a wasteful number, since it uses less digits than its factorization.

11959990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170871.

The product of its (nonzero) digits is 32805, while the sum is 43.

The square root of 11959990 is about 3458.3218473705. The cubic root of 11959990 is about 228.6881206608.

The spelling of 11959990 in words is "eleven million, nine hundred fifty-nine thousand, nine hundred ninety".