3942478683990 has 192 divisors, whose sum is σ = 12996382763520. Its totient is φ = 805331243520.

The previous prime is 3942478683953. The next prime is 3942478684021. The reversal of 3942478683990 is 993868742493.

3942478683990 is a `hidden beast` number, since 3 + 9 + 4 + 2 + 478 + 68 + 3 + 9 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4412319 + ... + 5230058.

It is an arithmetic number, because the mean of its divisors is an integer number (67689493560).

Almost surely, 2^{3942478683990} is an apocalyptic number.

3942478683990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3942478683990 is an abundant number, since it is smaller than the sum of its proper divisors (9053904079530).

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

3942478683990 is a wasteful number, since it uses less digits than its factorization.

3942478683990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642467 (or 9642464 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 3942478683990 in words is "three trillion, nine hundred forty-two billion, four hundred seventy-eight million, six hundred eighty-three thousand, nine hundred ninety".