398505095 has 16 divisors (see below), whose sum is σ = 499612320. Its totient is φ = 304752000.

The previous prime is 398505091. The next prime is 398505097. The reversal of 398505095 is 590505893.

It is a happy number.

It is not a de Polignac number, because 398505095 - 2² = 398505091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398505091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040 + ... + 28250.

It is an arithmetic number, because the mean of its divisors is an integer number (31225770).

Almost surely, 2^398505095 is an apocalyptic number.

398505095 is a deficient number, since it is larger than the sum of its proper divisors (101107225).

398505095 is a wasteful number, since it uses less digits than its factorization.

398505095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27346.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 398505095 is about 19962.5923917712. The cubic root of 398505095 is about 735.8872743779.

The spelling of 398505095 in words is "three hundred ninety-eight million, five hundred five thousand, ninety-five".