4121986 has 12 divisors (see below), whose sum is σ = 6796566. Its totient is φ = 1873520.

The previous prime is 4121959. The next prime is 4121987. The reversal of 4121986 is 6891214.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3876961 + 245025 = 1969^2 + 495^2 .

It is not an unprimeable number, because it can be changed into a prime (4121987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8275 + ... + 8758.

Almost surely, 2^4121986 is an apocalyptic number.

4121986 is a deficient number, since it is larger than the sum of its proper divisors (2674580).

4121986 is a wasteful number, since it uses less digits than its factorization.

4121986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17057 (or 17046 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 4121986 is about 2030.2674700640. The cubic root of 4121986 is about 160.3376463422.

The spelling of 4121986 in words is "four million, one hundred twenty-one thousand, nine hundred eighty-six".