5421994 has 4 divisors (see below), whose sum is σ = 8132994. Its totient is φ = 2710996.

The previous prime is 5421947. The next prime is 5422003. The reversal of 5421994 is 4991245.

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., 2845969 + 2576025 = 1687^2 + 1605^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1355497 + ... + 1355500.

Almost surely, 2^5421994 is an apocalyptic number.

5421994 is a deficient number, since it is larger than the sum of its proper divisors (2711000).

5421994 is a wasteful number, since it uses less digits than its factorization.

5421994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710999.

The product of its digits is 12960, while the sum is 34.

The square root of 5421994 is about 2328.5175541533. The cubic root of 5421994 is about 175.6789299641.

The spelling of 5421994 in words is "five million, four hundred twenty-one thousand, nine hundred ninety-four".