4978961 has 8 divisors (see below), whose sum is σ = 5380200. Its totient is φ = 4580352.

The previous prime is 4978957. The next prime is 4978973. The reversal of 4978961 is 1698794.

It can be written as a sum of positive squares in 4 ways, for example, as 1600 + 4977361 = 40^2 + 2231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4978961 - 2² = 4978957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4978901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5411 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (672525).

Almost surely, 2^4978961 is an apocalyptic number.

It is an amenable number.

4978961 is a deficient number, since it is larger than the sum of its proper divisors (401239).

4978961 is a wasteful number, since it uses less digits than its factorization.

4978961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 108864, while the sum is 44.

The square root of 4978961 is about 2231.3585547823. The cubic root of 4978961 is about 170.7574162515.

It can be divided in two parts, 49 and 78961, that multiplied together give a square (3869089 = 1967²).

The spelling of 4978961 in words is "four million, nine hundred seventy-eight thousand, nine hundred sixty-one".