4978951 has 4 divisors (see below), whose sum is σ = 5063400. Its totient is φ = 4894504.

The previous prime is 4978937. The next prime is 4978957. The reversal of 4978951 is 1598794.

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

It is a cyclic number.

It is not a de Polignac number, because 4978951 - 2²¹ = 2881799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4978898 and 4978907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978957) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 42136 + ... + 42253.

It is an arithmetic number, because the mean of its divisors is an integer number (1265850).

Almost surely, 2^4978951 is an apocalyptic number.

4978951 is a deficient number, since it is larger than the sum of its proper divisors (84449).

4978951 is an equidigital number, since it uses as much as digits as its factorization.

4978951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84448.

The product of its digits is 90720, while the sum is 43.

The square root of 4978951 is about 2231.3563139938. The cubic root of 4978951 is about 170.7573019321.

It can be divided in two parts, 4978 and 951, that added together give a square (5929 = 77²).

The spelling of 4978951 in words is "four million, nine hundred seventy-eight thousand, nine hundred fifty-one".