8440087942 has 64 divisors (see below), whose sum is σ = 15208300800. Its totient is φ = 3462238080.

The previous prime is 8440087921. The next prime is 8440087949. The reversal of 8440087942 is 2497800448.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8440087892 and 8440087901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440087949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3322909 + ... + 3325447.

It is an arithmetic number, because the mean of its divisors is an integer number (237629700).

Almost surely, 2^8440087942 is an apocalyptic number.

8440087942 is a deficient number, since it is larger than the sum of its proper divisors (6768212858).

8440087942 is a wasteful number, since it uses less digits than its factorization.

8440087942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 8440087942 is about 91869.9512463134. The cubic root of 8440087942 is about 2036.0213320690.

The spelling of 8440087942 in words is "eight billion, four hundred forty million, eighty-seven thousand, nine hundred forty-two".