398948652 has 72 divisors (see below), whose sum is σ = 1074165456. Its totient is φ = 129377088.

The previous prime is 398948629. The next prime is 398948659. The reversal of 398948652 is 256849893.

398948652 is a `hidden beast` number, since 39 + 89 + 486 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398948659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30418 + ... + 41510.

Almost surely, 2^398948652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398948652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537082728).

398948652 is an abundant number, since it is smaller than the sum of its proper divisors (675216804).

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

398948652 is a wasteful number, since it uses less digits than its factorization.

398948652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149 (or 11135 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 398948652 is about 19973.6990064434. The cubic root of 398948652 is about 736.1602001428.

The spelling of 398948652 in words is "three hundred ninety-eight million, nine hundred forty-eight thousand, six hundred fifty-two".