391485348 has 72 divisors (see below), whose sum is σ = 1061424000. Its totient is φ = 121283136.

The previous prime is 391485319. The next prime is 391485371. The reversal of 391485348 is 843584193.

It is a super-2 number, since 2×391485348² = 306521555397362208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30853 + ... + 41651.

It is an arithmetic number, because the mean of its divisors is an integer number (14742000).

Almost surely, 2^391485348 is an apocalyptic number.

391485348 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391485348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530712000).

391485348 is an abundant number, since it is smaller than the sum of its proper divisors (669938652).

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

391485348 is a wasteful number, since it uses less digits than its factorization.

391485348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10881 (or 10876 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 391485348 is about 19785.9886788606. The cubic root of 391485348 is about 731.5407178928.

The spelling of 391485348 in words is "three hundred ninety-one million, four hundred eighty-five thousand, three hundred forty-eight".