147930491 has 2 divisors, whose sum is σ = 147930492. Its totient is φ = 147930490.

The previous prime is 147930467. The next prime is 147930521. The reversal of 147930491 is 194039741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147930491 - 2⁶ = 147930427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147930451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73965245 + 73965246.

It is an arithmetic number, because the mean of its divisors is an integer number (73965246).

Almost surely, 2^147930491 is an apocalyptic number.

147930491 is a deficient number, since it is larger than the sum of its proper divisors (1).

147930491 is an equidigital number, since it uses as much as digits as its factorization.

147930491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 147930491 is about 12162.6679227873. The cubic root of 147930491 is about 528.8744250920.

The spelling of 147930491 in words is "one hundred forty-seven million, nine hundred thirty thousand, four hundred ninety-one".