7441978 has 4 divisors (see below), whose sum is σ = 11162970. Its totient is φ = 3720988.

The previous prime is 7441969. The next prime is 7441981. The reversal of 7441978 is 8791447.

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

It can be written as a sum of positive squares in only one way, i.e., 6135529 + 1306449 = 2477^2 + 1143^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7441978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860493 + ... + 1860496.

Almost surely, 2^7441978 is an apocalyptic number.

7441978 is a deficient number, since it is larger than the sum of its proper divisors (3720992).

7441978 is a wasteful number, since it uses less digits than its factorization.

7441978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720991.

The product of its digits is 56448, while the sum is 40.

The square root of 7441978 is about 2727.9989002930. The cubic root of 7441978 is about 195.2373004113.

The spelling of 7441978 in words is "seven million, four hundred forty-one thousand, nine hundred seventy-eight".