478896990 has 192 divisors, whose sum is σ = 1406564352. Its totient is φ = 103334400.

The previous prime is 478896989. The next prime is 478896991. The reversal of 478896990 is 99698874.

It is an interprime number because it is at equal distance from previous prime (478896989) and next prime (478896991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478896991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1728732 + ... + 1729008.

It is an arithmetic number, because the mean of its divisors is an integer number (7325856).

Almost surely, 2^478896990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478896990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703282176).

478896990 is an abundant number, since it is smaller than the sum of its proper divisors (927667362).

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

478896990 is a wasteful number, since it uses less digits than its factorization.

478896990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The square root of 478896990 is about 21883.7151781867. The cubic root of 478896990 is about 782.3733268463.

The spelling of 478896990 in words is "four hundred seventy-eight million, eight hundred ninety-six thousand, nine hundred ninety".