19432997 has 2 divisors, whose sum is σ = 19432998. Its totient is φ = 19432996.

The previous prime is 19432979. The next prime is 19433009. The reversal of 19432997 is 79923491.

Together with previous prime (19432979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19351201 + 81796 = 4399^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 19432997 - 2⁸ = 19432741 is a prime.

It is a Chen prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19432937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9716498 + 9716499.

It is an arithmetic number, because the mean of its divisors is an integer number (9716499).

Almost surely, 2^19432997 is an apocalyptic number.

It is an amenable number.

19432997 is a deficient number, since it is larger than the sum of its proper divisors (1).

19432997 is an equidigital number, since it uses as much as digits as its factorization.

19432997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 19432997 is about 4408.2873091485. The cubic root of 19432997 is about 268.8519935932.

The spelling of 19432997 in words is "nineteen million, four hundred thirty-two thousand, nine hundred ninety-seven".