19941403 has 2 divisors, whose sum is σ = 19941404. Its totient is φ = 19941402.

The previous prime is 19941371. The next prime is 19941407. The reversal of 19941403 is 30414991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19941403 - 2⁵ = 19941371 is a prime.

It is not a weakly prime, because it can be changed into another prime (19941407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9970701 + 9970702.

It is an arithmetic number, because the mean of its divisors is an integer number (9970702).

Almost surely, 2^19941403 is an apocalyptic number.

19941403 is a deficient number, since it is larger than the sum of its proper divisors (1).

19941403 is an equidigital number, since it uses as much as digits as its factorization.

19941403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19941403 is about 4465.5798055796. The cubic root of 19941403 is about 271.1764077930.

The spelling of 19941403 in words is "nineteen million, nine hundred forty-one thousand, four hundred three".