3549947 has 2 divisors, whose sum is σ = 3549948. Its totient is φ = 3549946.

The previous prime is 3549913. The next prime is 3549967. The reversal of 3549947 is 7499453.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3549947 - 2⁸ = 3549691 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3¹³ + 5⁹ + 4² + 9 + 9 + 4³ + 7⁴ .

It is not a weakly prime, because it can be changed into another prime (3549967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1774973 + 1774974.

It is an arithmetic number, because the mean of its divisors is an integer number (1774974).

Almost surely, 2^3549947 is an apocalyptic number.

3549947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3549947 is an equidigital number, since it uses as much as digits as its factorization.

3549947 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 3549947 is about 1884.1303033495. The cubic root of 3549947 is about 152.5482710221.

It can be divided in two parts, 354 and 9947, that added together give a palindrome (10301).

The spelling of 3549947 in words is "three million, five hundred forty-nine thousand, nine hundred forty-seven".