1379870 has 16 divisors (see below), whose sum is σ = 2542320. Its totient is φ = 538944.

The previous prime is 1379869. The next prime is 1379879. The reversal of 1379870 is 789731.

It is a self number, because there is not a number n which added to its sum of digits gives 1379870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379879) 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, 1175 + ... + 2034.

It is an arithmetic number, because the mean of its divisors is an integer number (158895).

2^1379870 is an apocalyptic number.

1379870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1379870 is a deficient number, since it is larger than the sum of its proper divisors (1162450).

1379870 is a wasteful number, since it uses less digits than its factorization.

1379870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1379870 is about 1174.6786794694. The cubic root of 1379870 is about 111.3301320588.

It can be divided in two parts, 137 and 9870, that multiplied together give a triangular number (1352190 = T₁₆₄₄).

The spelling of 1379870 in words is "one million, three hundred seventy-nine thousand, eight hundred seventy".