3977349678 has 48 divisors (see below), whose sum is σ = 8744486400. Its totient is φ = 1306404288.

The previous prime is 3977349659. The next prime is 3977349679. The reversal of 3977349678 is 8769437793.

3977349678 is a `hidden beast` number, since 3 + 9 + 7 + 73 + 496 + 78 = 666.

It is a super-2 number, since 2×3977349678² = 31638620922173407368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977349679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334776 + ... + 346452.

It is an arithmetic number, because the mean of its divisors is an integer number (182176800).

Almost surely, 2^3977349678 is an apocalyptic number.

3977349678 is an abundant number, since it is smaller than the sum of its proper divisors (4767136722).

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

3977349678 is a wasteful number, since it uses less digits than its factorization.

3977349678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11961 (or 11958 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 63.

The square root of 3977349678 is about 63066.2324703165. The cubic root of 3977349678 is about 1584.3991165032.

The spelling of 3977349678 in words is "three billion, nine hundred seventy-seven million, three hundred forty-nine thousand, six hundred seventy-eight".