3894872478 has 32 divisors (see below), whose sum is σ = 8904432384. Its totient is φ = 1112587392.

The previous prime is 3894872477. The next prime is 3894872479. The reversal of 3894872478 is 8742784983.

It is an interprime number because it is at equal distance from previous prime (3894872477) and next prime (3894872479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894872477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346726 + ... + 357782.

It is an arithmetic number, because the mean of its divisors is an integer number (278263512).

Almost surely, 2^3894872478 is an apocalyptic number.

3894872478 is an abundant number, since it is smaller than the sum of its proper divisors (5009559906).

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

3894872478 is a wasteful number, since it uses less digits than its factorization.

3894872478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19456.

The product of its digits is 21676032, while the sum is 60.

The square root of 3894872478 is about 62408.9134499232. The cubic root of 3894872478 is about 1573.3707822987.

The spelling of 3894872478 in words is "three billion, eight hundred ninety-four million, eight hundred seventy-two thousand, four hundred seventy-eight".