3986215461 has 24 divisors (see below), whose sum is σ = 5934520800. Its totient is φ = 2576455776.

The previous prime is 3986215427. The next prime is 3986215543. The reversal of 3986215461 is 1645126893.

3986215461 is a `hidden beast` number, since 3 + 9 + 86 + 21 + 546 + 1 = 666.

3986215461 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3986215461 - 2²¹ = 3984118309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986215361) 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, 73090 + ... + 115388.

It is an arithmetic number, because the mean of its divisors is an integer number (247271700).

Almost surely, 2^3986215461 is an apocalyptic number.

It is an amenable number.

3986215461 is a deficient number, since it is larger than the sum of its proper divisors (1948305339).

3986215461 is a wasteful number, since it uses less digits than its factorization.

3986215461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42625 (or 42622 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3986215461 is about 63136.4828051104. The cubic root of 3986215461 is about 1585.5754873365.

The spelling of 3986215461 in words is "three billion, nine hundred eighty-six million, two hundred fifteen thousand, four hundred sixty-one".