19450969 has 2 divisors, whose sum is σ = 19450970. Its totient is φ = 19450968.

The previous prime is 19450961. The next prime is 19451021. The reversal of 19450969 is 96905491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 831744 = 4315^2 + 912^2 .

It is a cyclic number.

It is not a de Polignac number, because 19450969 - 2³ = 19450961 is a prime.

It is a super-2 number, since 2×19450969² = 756680390077922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19450961) 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, 9725484 + 9725485.

It is an arithmetic number, because the mean of its divisors is an integer number (9725485).

Almost surely, 2^19450969 is an apocalyptic number.

It is an amenable number.

19450969 is a deficient number, since it is larger than the sum of its proper divisors (1).

19450969 is an equidigital number, since it uses as much as digits as its factorization.

19450969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 19450969 is about 4410.3252714511. The cubic root of 19450969 is about 268.9348478449.

The spelling of 19450969 in words is "nineteen million, four hundred fifty thousand, nine hundred sixty-nine".