3706989 has 16 divisors (see below), whose sum is σ = 5807424. Its totient is φ = 2073600.

The previous prime is 3706961. The next prime is 3707021. The reversal of 3706989 is 9896073.

It is a happy number.

It is not a de Polignac number, because 3706989 - 2⁷ = 3706861 is a prime.

It is a super-2 number, since 2×3706989² = 27483534892242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3706989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3706189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3892 + ... + 4749.

It is an arithmetic number, because the mean of its divisors is an integer number (362964).

Almost surely, 2^3706989 is an apocalyptic number.

3706989 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3706989 is a deficient number, since it is larger than the sum of its proper divisors (2100435).

3706989 is a wasteful number, since it uses less digits than its factorization.

3706989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8668.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3706989 is about 1925.3542531181. The cubic root of 3706989 is about 154.7653612513.

The spelling of 3706989 in words is "three million, seven hundred six thousand, nine hundred eighty-nine".