3977785854 has 64 divisors (see below), whose sum is σ = 10109652480. Its totient is φ = 1135684800.

The previous prime is 3977785849. The next prime is 3977785901. The reversal of 3977785854 is 4585877793.

It is a super-4 number, since 4×3977785854⁴ (a number of 40 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 3977785791 and 3977785800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677857 + ... + 683699.

It is an arithmetic number, because the mean of its divisors is an integer number (157963320).

Almost surely, 2^3977785854 is an apocalyptic number.

3977785854 is an abundant number, since it is smaller than the sum of its proper divisors (6131866626).

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

3977785854 is a wasteful number, since it uses less digits than its factorization.

3977785854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662 (or 7656 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 63.

The square root of 3977785854 is about 63069.6904542903. The cubic root of 3977785854 is about 1584.4570320889.

The spelling of 3977785854 in words is "three billion, nine hundred seventy-seven million, seven hundred eighty-five thousand, eight hundred fifty-four".