3971496426 has 16 divisors (see below), whose sum is σ = 8127714144. Its totient is φ = 1293045264.

The previous prime is 3971496409. The next prime is 3971496427. The reversal of 3971496426 is 6246941793.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3971496427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7696441 + ... + 7696956.

It is an arithmetic number, because the mean of its divisors is an integer number (507982134).

Almost surely, 2^3971496426 is an apocalyptic number.

3971496426 is an abundant number, since it is smaller than the sum of its proper divisors (4156217718).

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

3971496426 is a wasteful number, since it uses less digits than its factorization.

3971496426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393445.

The product of its digits is 1959552, while the sum is 51.

The square root of 3971496426 is about 63019.8097902556. The cubic root of 3971496426 is about 1583.6215098836.

The spelling of 3971496426 in words is "three billion, nine hundred seventy-one million, four hundred ninety-six thousand, four hundred twenty-six".