3970644438 has 64 divisors (see below), whose sum is σ = 8185282560. Its totient is φ = 1283716512.

The previous prime is 3970644437. The next prime is 3970644439. The reversal of 3970644438 is 8344460793.

It is an interprime number because it is at equal distance from previous prime (3970644437) and next prime (3970644439).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3970644437) 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 31 ways as a sum of consecutive naturals, for example, 8153031 + ... + 8153517.

It is an arithmetic number, because the mean of its divisors is an integer number (127895040).

Almost surely, 2^3970644438 is an apocalyptic number.

3970644438 is an abundant number, since it is smaller than the sum of its proper divisors (4214638122).

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

3970644438 is a wasteful number, since it uses less digits than its factorization.

3970644438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The square root of 3970644438 is about 63013.0497436840. The cubic root of 3970644438 is about 1583.5082592873.

The spelling of 3970644438 in words is "three billion, nine hundred seventy million, six hundred forty-four thousand, four hundred thirty-eight".