916255397 has 4 divisors (see below), whose sum is σ = 917301036. Its totient is φ = 915209760.

The previous prime is 916255387. The next prime is 916255423. The reversal of 916255397 is 793552619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 845123041 + 71132356 = 29071^2 + 8434^2 .

It is a cyclic number.

It is not a de Polignac number, because 916255397 - 2⁴ = 916255381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916255357) 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 3 ways as a sum of consecutive naturals, for example, 521504 + ... + 523257.

It is an arithmetic number, because the mean of its divisors is an integer number (229325259).

Almost surely, 2^916255397 is an apocalyptic number.

It is an amenable number.

916255397 is a deficient number, since it is larger than the sum of its proper divisors (1045639).

916255397 is a wasteful number, since it uses less digits than its factorization.

916255397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045638.

The product of its digits is 510300, while the sum is 47.

The square root of 916255397 is about 30269.7108839843. The cubic root of 916255397 is about 971.2674814970.

The spelling of 916255397 in words is "nine hundred sixteen million, two hundred fifty-five thousand, three hundred ninety-seven".