5909957978 has 8 divisors (see below), whose sum is σ = 9104529972. Its totient is φ = 2875114656.

The previous prime is 5909957971. The next prime is 5909957981. The reversal of 5909957978 is 8797599095.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5909458129 + 499849 = 76873^2 + 707^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5909957971) 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, 39932075 + ... + 39932222.

Almost surely, 2^5909957978 is an apocalyptic number.

5909957978 is a deficient number, since it is larger than the sum of its proper divisors (3194571994).

5909957978 is a wasteful number, since it uses less digits than its factorization.

5909957978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79864336.

The product of its (nonzero) digits is 64297800, while the sum is 68.

The square root of 5909957978 is about 76876.2510662428. The cubic root of 5909957978 is about 1807.9848943203.

The spelling of 5909957978 in words is "five billion, nine hundred nine million, nine hundred fifty-seven thousand, nine hundred seventy-eight".