3691403 has 2 divisors, whose sum is σ = 3691404. Its totient is φ = 3691402.

The previous prime is 3691367. The next prime is 3691447. The reversal of 3691403 is 3041963.

3691403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3691403 - 2⁸ = 3691147 is a prime.

It is a super-2 number, since 2×3691403² = 27252912216818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3691003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845701 + 1845702.

It is an arithmetic number, because the mean of its divisors is an integer number (1845702).

Almost surely, 2^3691403 is an apocalyptic number.

3691403 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691403 is an equidigital number, since it uses as much as digits as its factorization.

3691403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3691403 is about 1921.3024228372. The cubic root of 3691403 is about 154.5481533869.

The spelling of 3691403 in words is "three million, six hundred ninety-one thousand, four hundred three".