3427239978 has 32 divisors (see below), whose sum is σ = 7664617920. Its totient is φ = 1135134000.

The previous prime is 3427239971. The next prime is 3427240057. The reversal of 3427239978 is 8799327243.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3427239971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193648 + ... + 210603.

It is an arithmetic number, because the mean of its divisors is an integer number (239519310).

Almost surely, 2^3427239978 is an apocalyptic number.

3427239978 is an abundant number, since it is smaller than the sum of its proper divisors (4237377942).

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

3427239978 is a wasteful number, since it uses less digits than its factorization.

3427239978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404419 (or 404413 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 3427239978 is about 58542.6338491872. The cubic root of 3427239978 is about 1507.6996651454.

The spelling of 3427239978 in words is "three billion, four hundred twenty-seven million, two hundred thirty-nine thousand, nine hundred seventy-eight".