147631969 has 2 divisors, whose sum is σ = 147631970. Its totient is φ = 147631968.

The previous prime is 147631937. The next prime is 147631987. The reversal of 147631969 is 969136741.

It is a happy number.

147631969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125888400 + 21743569 = 11220^2 + 4663^2 .

It is a cyclic number.

It is not a de Polignac number, because 147631969 - 2⁵ = 147631937 is a prime.

It is a super-2 number, since 2×147631969² = 43590396541633922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147631909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73815984 + 73815985.

It is an arithmetic number, because the mean of its divisors is an integer number (73815985).

Almost surely, 2^147631969 is an apocalyptic number.

It is an amenable number.

147631969 is a deficient number, since it is larger than the sum of its proper divisors (1).

147631969 is an equidigital number, since it uses as much as digits as its factorization.

147631969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 147631969 is about 12150.3896645334. The cubic root of 147631969 is about 528.5184313868.

The spelling of 147631969 in words is "one hundred forty-seven million, six hundred thirty-one thousand, nine hundred sixty-nine".