3207389 has 4 divisors (see below), whose sum is σ = 3285660. Its totient is φ = 3129120.

The previous prime is 3207377. The next prime is 3207397. The reversal of 3207389 is 9837023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9837023 = 7 ⋅1405289.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 2088025 = 1058^2 + 1445^2 .

It is not a de Polignac number, because 3207389 - 2⁸ = 3207133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3207329) 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, 39074 + ... + 39155.

It is an arithmetic number, because the mean of its divisors is an integer number (821415).

Almost surely, 2^3207389 is an apocalyptic number.

It is an amenable number.

3207389 is a deficient number, since it is larger than the sum of its proper divisors (78271).

3207389 is an equidigital number, since it uses as much as digits as its factorization.

3207389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78270.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3207389 is about 1790.9184794401. The cubic root of 3207389 is about 147.4745948776.

The spelling of 3207389 in words is "three million, two hundred seven thousand, three hundred eighty-nine".