4781398 has 4 divisors (see below), whose sum is σ = 7172100. Its totient is φ = 2390698.

The previous prime is 4781389. The next prime is 4781411. The reversal of 4781398 is 8931874.

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

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 4781398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195348 + ... + 1195351.

It is an arithmetic number, because the mean of its divisors is an integer number (1793025).

Almost surely, 2^4781398 is an apocalyptic number.

4781398 is a deficient number, since it is larger than the sum of its proper divisors (2390702).

4781398 is a wasteful number, since it uses less digits than its factorization.

4781398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390701.

The product of its digits is 48384, while the sum is 40.

The square root of 4781398 is about 2186.6408026926. The cubic root of 4781398 is about 168.4683407546.

The spelling of 4781398 in words is "four million, seven hundred eighty-one thousand, three hundred ninety-eight".