148199969 has 2 divisors, whose sum is σ = 148199970. Its totient is φ = 148199968.

The previous prime is 148199963. The next prime is 148200037. The reversal of 148199969 is 969991841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91393600 + 56806369 = 9560^2 + 7537^2 .

It is a cyclic number.

It is not a de Polignac number, because 148199969 - 2¹⁶ = 148134433 is a prime.

It is a super-2 number, since 2×148199969² = 43926461623201922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (148199963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74099984 + 74099985.

It is an arithmetic number, because the mean of its divisors is an integer number (74099985).

Almost surely, 2^148199969 is an apocalyptic number.

It is an amenable number.

148199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

148199969 is an equidigital number, since it uses as much as digits as its factorization.

148199969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 56.

The square root of 148199969 is about 12173.7409615943. The cubic root of 148199969 is about 529.1953721534.

The spelling of 148199969 in words is "one hundred forty-eight million, one hundred ninety-nine thousand, nine hundred sixty-nine".