398247486 has 96 divisors (see below), whose sum is σ = 1037917440. Its totient is φ = 99470592.

The previous prime is 398247469. The next prime is 398247503. The reversal of 398247486 is 684742893.

It is an interprime number because it is at equal distance from previous prime (398247469) and next prime (398247503).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133386 + ... + 136338.

It is an arithmetic number, because the mean of its divisors is an integer number (10811640).

Almost surely, 2^398247486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398247486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518958720).

398247486 is an abundant number, since it is smaller than the sum of its proper divisors (639669954).

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

398247486 is a wasteful number, since it uses less digits than its factorization.

398247486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 2997 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 398247486 is about 19956.1390554386. The cubic root of 398247486 is about 735.7286715975.

The spelling of 398247486 in words is "three hundred ninety-eight million, two hundred forty-seven thousand, four hundred eighty-six".