148789997 has 2 divisors, whose sum is σ = 148789998. Its totient is φ = 148789996.

The previous prime is 148789961. The next prime is 148790003. The reversal of 148789997 is 799987841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140327716 + 8462281 = 11846^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 148789997 - 2¹⁶ = 148724461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148789937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74394998 + 74394999.

It is an arithmetic number, because the mean of its divisors is an integer number (74394999).

Almost surely, 2^148789997 is an apocalyptic number.

It is an amenable number.

148789997 is a deficient number, since it is larger than the sum of its proper divisors (1).

148789997 is an equidigital number, since it uses as much as digits as its factorization.

148789997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 62.

The square root of 148789997 is about 12197.9505245758. The cubic root of 148789997 is about 529.8967367348.

The spelling of 148789997 in words is "one hundred forty-eight million, seven hundred eighty-nine thousand, nine hundred ninety-seven".