919439448 has 16 divisors (see below), whose sum is σ = 2298598680. Its totient is φ = 306479808.

The previous prime is 919439419. The next prime is 919439449. The reversal of 919439448 is 844934919.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 919439448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919439449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19154965 + ... + 19155012.

Almost surely, 2^919439448 is an apocalyptic number.

It is an amenable number.

919439448 is an abundant number, since it is smaller than the sum of its proper divisors (1379159232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

919439448 is a wasteful number, since it uses less digits than its factorization.

919439448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38309986 (or 38309982 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 919439448 is about 30322.2599421613. The cubic root of 919439448 is about 972.3912547059.

The spelling of 919439448 in words is "nine hundred nineteen million, four hundred thirty-nine thousand, four hundred forty-eight".