147763991 has 2 divisors, whose sum is σ = 147763992. Its totient is φ = 147763990.

The previous prime is 147763981. The next prime is 147764003. The reversal of 147763991 is 199367741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147763991 - 2⁶ = 147763927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147763981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73881995 + 73881996.

It is an arithmetic number, because the mean of its divisors is an integer number (73881996).

Almost surely, 2^147763991 is an apocalyptic number.

147763991 is a deficient number, since it is larger than the sum of its proper divisors (1).

147763991 is an equidigital number, since it uses as much as digits as its factorization.

147763991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 47.

The square root of 147763991 is about 12155.8212803578. The cubic root of 147763991 is about 528.6759295036.

The spelling of 147763991 in words is "one hundred forty-seven million, seven hundred sixty-three thousand, nine hundred ninety-one".