3786913 has 8 divisors (see below), whose sum is σ = 4188968. Its totient is φ = 3400704.

The previous prime is 3786899. The next prime is 3786919. The reversal of 3786913 is 3196873.

It can be written as a sum of positive squares in 4 ways, for example, as 54289 + 3732624 = 233^2 + 1932^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3786913 - 2⁹ = 3786401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3786919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3456 + ... + 4417.

It is an arithmetic number, because the mean of its divisors is an integer number (523621).

Almost surely, 2^3786913 is an apocalyptic number.

It is an amenable number.

3786913 is a deficient number, since it is larger than the sum of its proper divisors (402055).

3786913 is a wasteful number, since it uses less digits than its factorization.

3786913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923.

The product of its digits is 27216, while the sum is 37.

The square root of 3786913 is about 1945.9992291879. Note that the first 3 decimals coincide. The cubic root of 3786913 is about 155.8697274245.

The spelling of 3786913 in words is "three million, seven hundred eighty-six thousand, nine hundred thirteen".