4246666978 has 4 divisors (see below), whose sum is σ = 6370000470. Its totient is φ = 2123333488.

The previous prime is 4246666973. The next prime is 4246666987. The reversal of 4246666978 is 8796666424.

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., 2419360969 + 1827306009 = 49187^2 + 42747^2 .

It is not an unprimeable number, because it can be changed into a prime (4246666973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061666743 + ... + 1061666746.

Almost surely, 2^4246666978 is an apocalyptic number.

4246666978 is a deficient number, since it is larger than the sum of its proper divisors (2123333492).

4246666978 is a wasteful number, since it uses less digits than its factorization.

4246666978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123333491.

The product of its digits is 20901888, while the sum is 58.

The square root of 4246666978 is about 65166.4559263430. The cubic root of 4246666978 is about 1619.3823507839.

The spelling of 4246666978 in words is "four billion, two hundred forty-six million, six hundred sixty-six thousand, nine hundred seventy-eight".