1239670 has 16 divisors (see below), whose sum is σ = 2274480. Its totient is φ = 486304.

The previous prime is 1239661. The next prime is 1239671. The reversal of 1239670 is 769321.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239671) 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, 640 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (142155).

2^1239670 is an apocalyptic number.

1239670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239670 is a deficient number, since it is larger than the sum of its proper divisors (1034810).

1239670 is a wasteful number, since it uses less digits than its factorization.

1239670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1239670 is about 1113.4046883321. The cubic root of 1239670 is about 107.4241758438.

The spelling of 1239670 in words is "one million, two hundred thirty-nine thousand, six hundred seventy".