488409978 has 16 divisors (see below), whose sum is σ = 1116365760. Its totient is φ = 139545696.

The previous prime is 488409973. The next prime is 488409979. The reversal of 488409978 is 879904884.

It is not an unprimeable number, because it can be changed into a prime (488409973) 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, 5814363 + ... + 5814446.

It is an arithmetic number, because the mean of its divisors is an integer number (69772860).

Almost surely, 2^488409978 is an apocalyptic number.

488409978 is an abundant number, since it is smaller than the sum of its proper divisors (627955782).

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

488409978 is a wasteful number, since it uses less digits than its factorization.

488409978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628821.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 488409978 is about 22099.9995022624. Note that the first 3 decimals coincide. The cubic root of 488409978 is about 787.5198499406.

The spelling of 488409978 in words is "four hundred eighty-eight million, four hundred nine thousand, nine hundred seventy-eight".