846442155 has 128 divisors (see below), whose sum is σ = 1625315328. Its totient is φ = 372252672.

The previous prime is 846442151. The next prime is 846442231. The reversal of 846442155 is 551244648.

It is a happy number.

It is not a de Polignac number, because 846442155 - 2² = 846442151 is a prime.

It is a super-2 number, since 2×846442155² = 1432928643522088050, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (846442151) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8217834 + ... + 8217936.

It is an arithmetic number, because the mean of its divisors is an integer number (12697776).

Almost surely, 2^846442155 is an apocalyptic number.

846442155 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

846442155 is a deficient number, since it is larger than the sum of its proper divisors (778873173).

846442155 is a wasteful number, since it uses less digits than its factorization.

846442155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 153600, while the sum is 39.

The square root of 846442155 is about 29093.6789526522. The cubic root of 846442155 is about 945.9447286413.

The spelling of 846442155 in words is "eight hundred forty-six million, four hundred forty-two thousand, one hundred fifty-five".