3857390 has 8 divisors (see below), whose sum is σ = 6943320. Its totient is φ = 1542952.

The previous prime is 3857383. The next prime is 3857417. The reversal of 3857390 is 937583.

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

It is a super-2 number, since 2×3857390² = 29758915224200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3857390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192860 + ... + 192879.

It is an arithmetic number, because the mean of its divisors is an integer number (867915).

Almost surely, 2^3857390 is an apocalyptic number.

3857390 is a deficient number, since it is larger than the sum of its proper divisors (3085930).

3857390 is a wasteful number, since it uses less digits than its factorization.

3857390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385746.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 3857390 is about 1964.0239306078. The cubic root of 3857390 is about 156.8307370241.

The spelling of 3857390 in words is "three million, eight hundred fifty-seven thousand, three hundred ninety".