147478973 has 2 divisors, whose sum is σ = 147478974. Its totient is φ = 147478972.

The previous prime is 147478957. The next prime is 147478979. The reversal of 147478973 is 379874741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139310809 + 8168164 = 11803^2 + 2858^2 .

It is a cyclic number.

It is not a de Polignac number, because 147478973 - 2⁴ = 147478957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147478979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73739486 + 73739487.

It is an arithmetic number, because the mean of its divisors is an integer number (73739487).

Almost surely, 2^147478973 is an apocalyptic number.

It is an amenable number.

147478973 is a deficient number, since it is larger than the sum of its proper divisors (1).

147478973 is an equidigital number, since it uses as much as digits as its factorization.

147478973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The square root of 147478973 is about 12144.0921027469. The cubic root of 147478973 is about 528.3357944425.

The spelling of 147478973 in words is "one hundred forty-seven million, four hundred seventy-eight thousand, nine hundred seventy-three".