147897845 has 4 divisors (see below), whose sum is σ = 177477420. Its totient is φ = 118318272.

The previous prime is 147897829. The next prime is 147897851. The reversal of 147897845 is 548798741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548798741 = 1951 ⋅281291.

It can be written as a sum of positive squares in 2 ways, for example, as 17960644 + 129937201 = 4238^2 + 11399^2 .

It is a cyclic number.

It is not a de Polignac number, because 147897845 - 2⁴ = 147897829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14789780 + ... + 14789789.

It is an arithmetic number, because the mean of its divisors is an integer number (44369355).

Almost surely, 2^147897845 is an apocalyptic number.

It is an amenable number.

147897845 is a deficient number, since it is larger than the sum of its proper divisors (29579575).

147897845 is an equidigital number, since it uses as much as digits as its factorization.

147897845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29579574.

The product of its digits is 2257920, while the sum is 53.

The square root of 147897845 is about 12161.3257912121. The cubic root of 147897845 is about 528.8355173937.

The spelling of 147897845 in words is "one hundred forty-seven million, eight hundred ninety-seven thousand, eight hundred forty-five".