3890139 has 8 divisors (see below), whose sum is σ = 5658432. Its totient is φ = 2357640.

The previous prime is 3890129. The next prime is 3890149. The reversal of 3890139 is 9310983.

It is an interprime number because it is at equal distance from previous prime (3890129) and next prime (3890149).

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

It is not a de Polignac number, because 3890139 - 2⁷ = 3890011 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 117883 = 3890139 / (3 + 8 + 9 + 0 + 1 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (3890119) 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, 58909 + ... + 58974.

It is an arithmetic number, because the mean of its divisors is an integer number (707304).

Almost surely, 2^3890139 is an apocalyptic number.

3890139 is a deficient number, since it is larger than the sum of its proper divisors (1768293).

3890139 is a wasteful number, since it uses less digits than its factorization.

3890139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117897.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 3890139 is about 1972.3435299156. The cubic root of 3890139 is about 157.2733146101.

The spelling of 3890139 in words is "three million, eight hundred ninety thousand, one hundred thirty-nine".