147949457 has 2 divisors, whose sum is σ = 147949458. Its totient is φ = 147949456.

The previous prime is 147949441. The next prime is 147949463. The reversal of 147949457 is 754949741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147889921 + 59536 = 12161^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 147949457 - 2⁴ = 147949441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147949057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73974728 + 73974729.

It is an arithmetic number, because the mean of its divisors is an integer number (73974729).

Almost surely, 2^147949457 is an apocalyptic number.

It is an amenable number.

147949457 is a deficient number, since it is larger than the sum of its proper divisors (1).

147949457 is an equidigital number, since it uses as much as digits as its factorization.

147949457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 147949457 is about 12163.4475787089. The cubic root of 147949457 is about 528.8970262556.

The spelling of 147949457 in words is "one hundred forty-seven million, nine hundred forty-nine thousand, four hundred fifty-seven".