147932881 has 2 divisors, whose sum is σ = 147932882. Its totient is φ = 147932880.

The previous prime is 147932843. The next prime is 147932891. The reversal of 147932881 is 188239741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146531025 + 1401856 = 12105^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 147932881 - 2⁷ = 147932753 is a prime.

It is a super-2 number, since 2×147932881² = 43768274561920322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147932891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73966440 + 73966441.

It is an arithmetic number, because the mean of its divisors is an integer number (73966441).

Almost surely, 2^147932881 is an apocalyptic number.

It is an amenable number.

147932881 is a deficient number, since it is larger than the sum of its proper divisors (1).

147932881 is an equidigital number, since it uses as much as digits as its factorization.

147932881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 147932881 is about 12162.7661738603. The cubic root of 147932881 is about 528.8772732834.

The spelling of 147932881 in words is "one hundred forty-seven million, nine hundred thirty-two thousand, eight hundred eighty-one".