393551652 has 72 divisors (see below), whose sum is σ = 1017708384. Its totient is φ = 118250496.

The previous prime is 393551629. The next prime is 393551657. The reversal of 393551652 is 256155393.

It is a super-3 number, since 3×393551652³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 393551652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393551657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84948 + ... + 89460.

Almost surely, 2^393551652 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 393551652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508854192).

393551652 is an abundant number, since it is smaller than the sum of its proper divisors (624156732).

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

393551652 is a wasteful number, since it uses less digits than its factorization.

393551652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589 (or 4574 counting only the distinct ones).

The product of its digits is 121500, while the sum is 39.

The square root of 393551652 is about 19838.1363035946. The cubic root of 393551652 is about 732.8255116918.

The spelling of 393551652 in words is "three hundred ninety-three million, five hundred fifty-one thousand, six hundred fifty-two".