1378417 has 8 divisors (see below), whose sum is σ = 1428480. Its totient is φ = 1329360.

The previous prime is 1378397. The next prime is 1378427. The reversal of 1378417 is 7148731.

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 1378417 - 2¹⁵ = 1345649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3408 + ... + 3790.

It is an arithmetic number, because the mean of its divisors is an integer number (178560).

2^1378417 is an apocalyptic number.

It is an amenable number.

1378417 is a deficient number, since it is larger than the sum of its proper divisors (50063).

1378417 is an equidigital number, since it uses as much as digits as its factorization.

1378417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

The product of its digits is 4704, while the sum is 31.

The square root of 1378417 is about 1174.0600495716. The cubic root of 1378417 is about 111.2910415422.

The spelling of 1378417 in words is "one million, three hundred seventy-eight thousand, four hundred seventeen".