3477421 has 2 divisors, whose sum is σ = 3477422. Its totient is φ = 3477420.

The previous prime is 3477407. The next prime is 3477431. The reversal of 3477421 is 1247743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 1028196 = 1565^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3477421 - 2⁷ = 3477293 is a prime.

It is a super-2 number, since 2×3477421² = 24184913622482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3477421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3477431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1738710 + 1738711.

It is an arithmetic number, because the mean of its divisors is an integer number (1738711).

Almost surely, 2^3477421 is an apocalyptic number.

It is an amenable number.

3477421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3477421 is an equidigital number, since it uses as much as digits as its factorization.

3477421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 28.

The square root of 3477421 is about 1864.7844379445. The cubic root of 3477421 is about 151.5022528321.

It can be divided in two parts, 347742 and 1, that added together give a palindrome (347743).

The spelling of 3477421 in words is "three million, four hundred seventy-seven thousand, four hundred twenty-one".