870149 has 8 divisors (see below), whose sum is σ = 1001088. Its totient is φ = 740880.

The previous prime is 870137. The next prime is 870151. The reversal of 870149 is 941078.

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

It is not a de Polignac number, because 870149 - 2⁸ = 869893 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870109) 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, 1064 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (125136).

2⁸⁷⁰¹⁴⁹ is an apocalyptic number.

It is an amenable number.

870149 is a deficient number, since it is larger than the sum of its proper divisors (130939).

870149 is a wasteful number, since it uses less digits than its factorization.

870149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 870149 is about 932.8177742732. The cubic root of 870149 is about 95.4694766446.

It can be divided in two parts, 87014 and 9, that multiplied together give a triangular number (783126 = T₁₂₅₁).

The spelling of 870149 in words is "eight hundred seventy thousand, one hundred forty-nine".