1390553 has 8 divisors (see below), whose sum is σ = 1476000. Its totient is φ = 1306368.

The previous prime is 1390547. The next prime is 1390573. The reversal of 1390553 is 3550931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390553 - 2⁶ = 1390489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390573) 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 7 ways as a sum of consecutive naturals, for example, 2873 + ... + 3321.

It is an arithmetic number, because the mean of its divisors is an integer number (184500).

2^1390553 is an apocalyptic number.

It is an amenable number.

1390553 is a deficient number, since it is larger than the sum of its proper divisors (85447).

1390553 is a wasteful number, since it uses less digits than its factorization.

1390553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 1390553 is about 1179.2171131730. The cubic root of 1390553 is about 111.6167009944.

The spelling of 1390553 in words is "one million, three hundred ninety thousand, five hundred fifty-three".