3967864378 has 8 divisors (see below), whose sum is σ = 5955814368. Its totient is φ = 1982592924.

The previous prime is 3967864309. The next prime is 3967864387. The reversal of 3967864378 is 8734687693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665926 + ... + 671857.

It is an arithmetic number, because the mean of its divisors is an integer number (744476796).

Almost surely, 2^3967864378 is an apocalyptic number.

3967864378 is a deficient number, since it is larger than the sum of its proper divisors (1987949990).

3967864378 is a wasteful number, since it uses less digits than its factorization.

3967864378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339268.

The product of its digits is 36578304, while the sum is 61.

The square root of 3967864378 is about 62990.9864821944. The cubic root of 3967864378 is about 1583.1386067992.

The spelling of 3967864378 in words is "three billion, nine hundred sixty-seven million, eight hundred sixty-four thousand, three hundred seventy-eight".