1390790 has 8 divisors (see below), whose sum is σ = 2503440. Its totient is φ = 556312.

The previous prime is 1390789. The next prime is 1390801. The reversal of 1390790 is 970931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69530 + ... + 69549.

It is an arithmetic number, because the mean of its divisors is an integer number (312930).

2^1390790 is an apocalyptic number.

1390790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390790 is a deficient number, since it is larger than the sum of its proper divisors (1112650).

1390790 is a wasteful number, since it uses less digits than its factorization.

1390790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139086.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 1390790 is about 1179.3175992921. The cubic root of 1390790 is about 111.6230417944.

The spelling of 1390790 in words is "one million, three hundred ninety thousand, seven hundred ninety".