1390007 has 4 divisors (see below), whose sum is σ = 1412856. Its totient is φ = 1367160.

The previous prime is 1390003. The next prime is 1390019. The reversal of 1390007 is 7000931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7000931 = 7 ⋅1000133.

It is a cyclic number.

It is not a de Polignac number, because 1390007 - 2² = 1390003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390003) 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, 11333 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (353214).

2^1390007 is an apocalyptic number.

1390007 is a deficient number, since it is larger than the sum of its proper divisors (22849).

1390007 is an equidigital number, since it uses as much as digits as its factorization.

1390007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22848.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 1390007 is about 1178.9855809127. The cubic root of 1390007 is about 111.6020903331.

Adding to 1390007 its reverse (7000931), we get a palindrome (8390938).

The spelling of 1390007 in words is "one million, three hundred ninety thousand, seven".