1393970 has 8 divisors (see below), whose sum is σ = 2509164. Its totient is φ = 557584.

The previous prime is 1393969. The next prime is 1393979. The reversal of 1393970 is 793931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1324801 + 69169 = 1151^2 + 263^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1393979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69689 + ... + 69708.

2^1393970 is an apocalyptic number.

1393970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1393970 is a deficient number, since it is larger than the sum of its proper divisors (1115194).

1393970 is a wasteful number, since it uses less digits than its factorization.

1393970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139404.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 1393970 is about 1180.6650668162. The cubic root of 1393970 is about 111.7080512926.

The spelling of 1393970 in words is "one million, three hundred ninety-three thousand, nine hundred seventy".