5109978 has 32 divisors (see below), whose sum is σ = 10708992. Its totient is φ = 1623600.

The previous prime is 5109971. The next prime is 5109989. The reversal of 5109978 is 8799015.

It is a happy number.

It is a super-2 number, since 2×5109978² = 52223750320968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5109971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15273 + ... + 15603.

It is an arithmetic number, because the mean of its divisors is an integer number (334656).

Almost surely, 2^5109978 is an apocalyptic number.

5109978 is an abundant number, since it is smaller than the sum of its proper divisors (5599014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5109978 is a wasteful number, since it uses less digits than its factorization.

5109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 5109978 is about 2260.5260449727. The cubic root of 5109978 is about 172.2422447450.

The spelling of 5109978 in words is "five million, one hundred nine thousand, nine hundred seventy-eight".