19932427 has 2 divisors, whose sum is σ = 19932428. Its totient is φ = 19932426.

The previous prime is 19932413. The next prime is 19932443. The reversal of 19932427 is 72423991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19932427 is a prime.

It is a super-2 number, since 2×19932427² = 794603292220658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19932487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9966213 + 9966214.

It is an arithmetic number, because the mean of its divisors is an integer number (9966214).

Almost surely, 2^19932427 is an apocalyptic number.

19932427 is a deficient number, since it is larger than the sum of its proper divisors (1).

19932427 is an equidigital number, since it uses as much as digits as its factorization.

19932427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 19932427 is about 4464.5746717913. The cubic root of 19932427 is about 271.1357144888.

The spelling of 19932427 in words is "nineteen million, nine hundred thirty-two thousand, four hundred twenty-seven".