147723945 has 16 divisors (see below), whose sum is σ = 239887680. Its totient is φ = 77609664.

The previous prime is 147723929. The next prime is 147723971. The reversal of 147723945 is 549327741.

It is not a de Polignac number, because 147723945 - 2⁴ = 147723929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 147723897 and 147723906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72490 + ... + 74499.

It is an arithmetic number, because the mean of its divisors is an integer number (14992980).

Almost surely, 2^147723945 is an apocalyptic number.

147723945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147723945 is a deficient number, since it is larger than the sum of its proper divisors (92163735).

147723945 is a wasteful number, since it uses less digits than its factorization.

147723945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147064.

The product of its digits is 211680, while the sum is 42.

The square root of 147723945 is about 12154.1739744007. The cubic root of 147723945 is about 528.6281657938.

The spelling of 147723945 in words is "one hundred forty-seven million, seven hundred twenty-three thousand, nine hundred forty-five".