3856340442 has 16 divisors (see below), whose sum is σ = 7732823040. Its totient is φ = 1282089792.

The previous prime is 3856340353. The next prime is 3856340447. The reversal of 3856340442 is 2440436583.

It is a self number, because there is not a number n which added to its sum of digits gives 3856340442.

It is not an unprimeable number, because it can be changed into a prime (3856340447) 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 7 ways as a sum of consecutive naturals, for example, 836767 + ... + 841362.

It is an arithmetic number, because the mean of its divisors is an integer number (483301440).

Almost surely, 2^3856340442 is an apocalyptic number.

3856340442 is an abundant number, since it is smaller than the sum of its proper divisors (3876482598).

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

3856340442 is a wasteful number, since it uses less digits than its factorization.

3856340442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678517.

The product of its (nonzero) digits is 276480, while the sum is 39.

The square root of 3856340442 is about 62099.4399491654. The cubic root of 3856340442 is about 1568.1651169851.

The spelling of 3856340442 in words is "three billion, eight hundred fifty-six million, three hundred forty thousand, four hundred forty-two".