90780419 has 2 divisors, whose sum is σ = 90780420. Its totient is φ = 90780418.

The previous prime is 90780407. The next prime is 90780463. The reversal of 90780419 is 91408709.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90780419 - 2⁸ = 90780163 is a prime.

It is a super-2 number, since 2×90780419² = 16482168947631122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90780479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45390209 + 45390210.

It is an arithmetic number, because the mean of its divisors is an integer number (45390210).

Almost surely, 2^90780419 is an apocalyptic number.

90780419 is a deficient number, since it is larger than the sum of its proper divisors (1).

90780419 is an equidigital number, since it uses as much as digits as its factorization.

90780419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 90780419 is about 9527.8758912992. The cubic root of 90780419 is about 449.4320720185.

The spelling of 90780419 in words is "ninety million, seven hundred eighty thousand, four hundred nineteen".