3950389 has 2 divisors, whose sum is σ = 3950390. Its totient is φ = 3950388.

The previous prime is 3950383. The next prime is 3950393. The reversal of 3950389 is 9830593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3122289 + 828100 = 1767^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 3950389 - 2⁹ = 3949877 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3950383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975194 + 1975195.

It is an arithmetic number, because the mean of its divisors is an integer number (1975195).

Almost surely, 2^3950389 is an apocalyptic number.

It is an amenable number.

3950389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3950389 is an equidigital number, since it uses as much as digits as its factorization.

3950389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 3950389 is about 1987.5585525966. The cubic root of 3950389 is about 158.0811018764.

The spelling of 3950389 in words is "three million, nine hundred fifty thousand, three hundred eighty-nine".