1380455 has 4 divisors (see below), whose sum is σ = 1656552. Its totient is φ = 1104360.

The previous prime is 1380443. The next prime is 1380469. The reversal of 1380455 is 5540831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1380455 - 2⁴ = 1380439 is a prime.

It is a Duffinian number.

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, 138041 + ... + 138050.

It is an arithmetic number, because the mean of its divisors is an integer number (414138).

2^1380455 is an apocalyptic number.

1380455 is a deficient number, since it is larger than the sum of its proper divisors (276097).

1380455 is an equidigital number, since it uses as much as digits as its factorization.

1380455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276096.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1380455 is about 1174.9276573475. The cubic root of 1380455 is about 111.3458627498.

The spelling of 1380455 in words is "one million, three hundred eighty thousand, four hundred fifty-five".