395121726 has 40 divisors (see below), whose sum is σ = 888754680. Its totient is φ = 131203152.

The previous prime is 395121703. The next prime is 395121751. The reversal of 395121726 is 627121593.

It is a super-2 number, since 2×395121726² = 312242356714438152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39045 + ... + 48111.

It is an arithmetic number, because the mean of its divisors is an integer number (22218867).

Almost surely, 2^395121726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395121726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444377340).

395121726 is an abundant number, since it is smaller than the sum of its proper divisors (493632954).

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

395121726 is a wasteful number, since it uses less digits than its factorization.

395121726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9350 (or 9341 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 395121726 is about 19877.6690283343. The cubic root of 395121726 is about 733.7987541840.

The spelling of 395121726 in words is "three hundred ninety-five million, one hundred twenty-one thousand, seven hundred twenty-six".