3977206136 has 8 divisors (see below), whose sum is σ = 7457261520. Its totient is φ = 1988603064.

The previous prime is 3977206133. The next prime is 3977206139. The reversal of 3977206136 is 6316027793.

It is an interprime number because it is at equal distance from previous prime (3977206133) and next prime (3977206139).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977206133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248575376 + ... + 248575391.

It is an arithmetic number, because the mean of its divisors is an integer number (932157690).

Almost surely, 2^3977206136 is an apocalyptic number.

It is an amenable number.

3977206136 is a deficient number, since it is larger than the sum of its proper divisors (3480055384).

3977206136 is a wasteful number, since it uses less digits than its factorization.

3977206136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497150773 (or 497150769 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 3977206136 is about 63065.0944342431. The cubic root of 3977206136 is about 1584.3800560256.

The spelling of 3977206136 in words is "three billion, nine hundred seventy-seven million, two hundred six thousand, one hundred thirty-six".