3954749 has 2 divisors, whose sum is σ = 3954750. Its totient is φ = 3954748.

The previous prime is 3954719. The next prime is 3954751. The reversal of 3954749 is 9474593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2502724 + 1452025 = 1582^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3954749 - 2⁸ = 3954493 is a prime.

Together with 3954751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3954719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977374 + 1977375.

It is an arithmetic number, because the mean of its divisors is an integer number (1977375).

Almost surely, 2^3954749 is an apocalyptic number.

It is an amenable number.

3954749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3954749 is an equidigital number, since it uses as much as digits as its factorization.

3954749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 3954749 is about 1988.6550731587. The cubic root of 3954749 is about 158.1392379395.

It can be divided in two parts, 39 and 54749, that multiplied together give a triangular number (2135211 = T₂₀₆₆).

The spelling of 3954749 in words is "three million, nine hundred fifty-four thousand, seven hundred forty-nine".