4007979506 has 8 divisors (see below), whose sum is σ = 6014527020. Its totient is φ = 2003137168.

The previous prime is 4007979497. The next prime is 4007979509. The reversal of 4007979506 is 6059797004.

It can be written as a sum of positive squares in 2 ways, for example, as 3667392481 + 340587025 = 60559^2 + 18455^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4007979509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420401 + ... + 429828.

Almost surely, 2^4007979506 is an apocalyptic number.

4007979506 is a deficient number, since it is larger than the sum of its proper divisors (2006547514).

4007979506 is a wasteful number, since it uses less digits than its factorization.

4007979506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852588.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 4007979506 is about 63308.6053076515. The cubic root of 4007979506 is about 1588.4559071951.

The spelling of 4007979506 in words is "four billion, seven million, nine hundred seventy-nine thousand, five hundred six".