3949469 has 2 divisors, whose sum is σ = 3949470. Its totient is φ = 3949468.

The previous prime is 3949459. The next prime is 3949487. The reversal of 3949469 is 9649493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3853369 + 96100 = 1963^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 3949469 - 2⁴ = 3949453 is a prime.

It is a super-2 number, since 2×3949469² = 31196610763922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974734 + 1974735.

It is an arithmetic number, because the mean of its divisors is an integer number (1974735).

Almost surely, 2^3949469 is an apocalyptic number.

It is an amenable number.

3949469 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949469 is an equidigital number, since it uses as much as digits as its factorization.

3949469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 3949469 is about 1987.3270993976. The cubic root of 3949469 is about 158.0688291689.

It can be divided in two parts, 39 and 49469, that multiplied together give a palindrome (1929291).

The spelling of 3949469 in words is "three million, nine hundred forty-nine thousand, four hundred sixty-nine".