97784419 has 2 divisors, whose sum is σ = 97784420. Its totient is φ = 97784418.

The previous prime is 97784413. The next prime is 97784441. The reversal of 97784419 is 91448779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97784419 - 2¹³ = 97776227 is a prime.

It is a super-2 number, since 2×97784419² = 19123585198335122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97784413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48892209 + 48892210.

It is an arithmetic number, because the mean of its divisors is an integer number (48892210).

Almost surely, 2^97784419 is an apocalyptic number.

97784419 is a deficient number, since it is larger than the sum of its proper divisors (1).

97784419 is an equidigital number, since it uses as much as digits as its factorization.

97784419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 97784419 is about 9888.6004570920. The cubic root of 97784419 is about 460.7053121410.

The spelling of 97784419 in words is "ninety-seven million, seven hundred eighty-four thousand, four hundred nineteen".