3865749407 has 8 divisors (see below), whose sum is σ = 4259931984. Its totient is φ = 3485397888.

The previous prime is 3865749397. The next prime is 3865749409. The reversal of 3865749407 is 7049475683.

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 3865749407 - 2⁶ = 3865749343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865749409) 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, 3457178 + ... + 3458295.

It is an arithmetic number, because the mean of its divisors is an integer number (532491498).

Almost surely, 2^3865749407 is an apocalyptic number.

3865749407 is a deficient number, since it is larger than the sum of its proper divisors (394182577).

3865749407 is a wasteful number, since it uses less digits than its factorization.

3865749407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915529.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The square root of 3865749407 is about 62175.1510412319. The cubic root of 3865749407 is about 1569.4394535595.

The spelling of 3865749407 in words is "three billion, eight hundred sixty-five million, seven hundred forty-nine thousand, four hundred seven".