1390172 has 24 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 589680.

The previous prime is 1390159. The next prime is 1390177. The reversal of 1390172 is 2710931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3479 + ... + 3857.

It is an arithmetic number, because the mean of its divisors is an integer number (117040).

2^1390172 is an apocalyptic number.

It is an amenable number.

1390172 is an abundant number, since it is smaller than the sum of its proper divisors (1418788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390172 is a wasteful number, since it uses less digits than its factorization.

1390172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1390172 is about 1179.0555542467. The cubic root of 1390172 is about 111.6065060462.

The spelling of 1390172 in words is "one million, three hundred ninety thousand, one hundred seventy-two".