1411978 has 4 divisors (see below), whose sum is σ = 2117970. Its totient is φ = 705988.

The previous prime is 1411961. The next prime is 1411979. The reversal of 1411978 is 8791141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8791141 = 101 ⋅87041.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 522729 = 943^2 + 723^2 .

It is not an unprimeable number, because it can be changed into a prime (1411979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352993 + ... + 352996.

2^1411978 is an apocalyptic number.

1411978 is a deficient number, since it is larger than the sum of its proper divisors (705992).

1411978 is an equidigital number, since it uses as much as digits as its factorization.

1411978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705991.

The product of its digits is 2016, while the sum is 31.

The square root of 1411978 is about 1188.2668050568. The cubic root of 1411978 is about 112.1870280704.

The spelling of 1411978 in words is "one million, four hundred eleven thousand, nine hundred seventy-eight".