19229401 has 2 divisors, whose sum is σ = 19229402. Its totient is φ = 19229400.

The previous prime is 19229389. The next prime is 19229411. The reversal of 19229401 is 10492291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 8497225 = 3276^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 19229401 - 2²¹ = 17132249 is a prime.

It is equal to p_1224676 and since 19229401 and 1224676 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19229401.

It is not a weakly prime, because it can be changed into another prime (19229411) 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, 9614700 + 9614701.

It is an arithmetic number, because the mean of its divisors is an integer number (9614701).

Almost surely, 2^19229401 is an apocalyptic number.

It is an amenable number.

19229401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19229401 is an equidigital number, since it uses as much as digits as its factorization.

19229401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 19229401 is about 4385.1340914503. The cubic root of 19229401 is about 267.9097908686.

The spelling of 19229401 in words is "nineteen million, two hundred twenty-nine thousand, four hundred one".