1390454 has 8 divisors (see below), whose sum is σ = 2246160. Its totient is φ = 641736.

The previous prime is 1390421. The next prime is 1390457. The reversal of 1390454 is 4540931.

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

It is a super-2 number, since 2×1390454² = 3866724652232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 53479 = 1390454 / (1 + 3 + 9 + 0 + 4 + 5 + 4).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390457) 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, 26714 + ... + 26765.

It is an arithmetic number, because the mean of its divisors is an integer number (280770).

2^1390454 is an apocalyptic number.

1390454 is a deficient number, since it is larger than the sum of its proper divisors (855706).

1390454 is a wasteful number, since it uses less digits than its factorization.

1390454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53494.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1390454 is about 1179.1751354231. The cubic root of 1390454 is about 111.6140520925.

The spelling of 1390454 in words is "one million, three hundred ninety thousand, four hundred fifty-four".