9419540439 has 4 divisors (see below), whose sum is σ = 12559387256. Its totient is φ = 6279693624.

The previous prime is 9419540419. The next prime is 9419540441. The reversal of 9419540439 is 9340459149.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9419540439 - 2⁵ = 9419540407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9419540419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569923404 + ... + 1569923409.

It is an arithmetic number, because the mean of its divisors is an integer number (3139846814).

Almost surely, 2^9419540439 is an apocalyptic number.

9419540439 is a deficient number, since it is larger than the sum of its proper divisors (3139846817).

9419540439 is a wasteful number, since it uses less digits than its factorization.

9419540439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139846816.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 9419540439 is about 97054.3169519007. The cubic root of 9419540439 is about 2111.9156654388.

The spelling of 9419540439 in words is "nine billion, four hundred nineteen million, five hundred forty thousand, four hundred thirty-nine".