1390973 has 4 divisors (see below), whose sum is σ = 1401120. Its totient is φ = 1380828.

The previous prime is 1390969. The next prime is 1390979. The reversal of 1390973 is 3790931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3790931 = 53 ⋅71527.

It is a cyclic number.

It is not a de Polignac number, because 1390973 - 2² = 1390969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4865 + ... + 5142.

It is an arithmetic number, because the mean of its divisors is an integer number (350280).

2^1390973 is an apocalyptic number.

It is an amenable number.

1390973 is a deficient number, since it is larger than the sum of its proper divisors (10147).

1390973 is a wasteful number, since it uses less digits than its factorization.

1390973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146.

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

The square root of 1390973 is about 1179.3951839820. The cubic root of 1390973 is about 111.6279373624.

The spelling of 1390973 in words is "one million, three hundred ninety thousand, nine hundred seventy-three".