40839419 has 2 divisors, whose sum is σ = 40839420. Its totient is φ = 40839418.

The previous prime is 40839401. The next prime is 40839433. The reversal of 40839419 is 91493804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40839419 - 2²⁰ = 39790843 is a prime.

It is a super-2 number, since 2×40839419² = 3335716288515122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40839499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419709 + 20419710.

It is an arithmetic number, because the mean of its divisors is an integer number (20419710).

Almost surely, 2^40839419 is an apocalyptic number.

40839419 is a deficient number, since it is larger than the sum of its proper divisors (1).

40839419 is an equidigital number, since it uses as much as digits as its factorization.

40839419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 40839419 is about 6390.5726660449. The cubic root of 40839419 is about 344.3709576569.

The spelling of 40839419 in words is "forty million, eight hundred thirty-nine thousand, four hundred nineteen".