148997 has 2 divisors, whose sum is σ = 148998. Its totient is φ = 148996.

The previous prime is 148991. The next prime is 149011. The reversal of 148997 is 799841.

It is a Cunningham number, because it is equal to 386²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148996 + 1 = 386^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 148997 - 2⁶ = 148933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 148997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74498 + 74499.

It is an arithmetic number, because the mean of its divisors is an integer number (74499).

2¹⁴⁸⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

148997 is a deficient number, since it is larger than the sum of its proper divisors (1).

148997 is an equidigital number, since it uses as much as digits as its factorization.

148997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 148997 is about 386.0012953346. The cubic root of 148997 is about 53.0142361188.

The spelling of 148997 in words is "one hundred forty-eight thousand, nine hundred ninety-seven".