3989279 has 4 divisors (see below), whose sum is σ = 4559184. Its totient is φ = 3419376.

The previous prime is 3989267. The next prime is 3989287. The reversal of 3989279 is 9729893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3989279 - 2⁸ = 3989023 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284942 + ... + 284955.

It is an arithmetic number, because the mean of its divisors is an integer number (1139796).

Almost surely, 2^3989279 is an apocalyptic number.

3989279 is a deficient number, since it is larger than the sum of its proper divisors (569905).

3989279 is an equidigital number, since it uses as much as digits as its factorization.

3989279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569904.

The product of its digits is 244944, while the sum is 47.

The square root of 3989279 is about 1997.3179516542. The cubic root of 3989279 is about 158.5981572469.

The spelling of 3989279 in words is "three million, nine hundred eighty-nine thousand, two hundred seventy-nine".