148617969 has 4 divisors (see below), whose sum is σ = 198157296. Its totient is φ = 99078644.

The previous prime is 148617947. The next prime is 148617977. The reversal of 148617969 is 969716841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969716841 = 3 ⋅323238947.

It is a cyclic number.

It is not a de Polignac number, because 148617969 - 2¹³ = 148609777 is a prime.

It is a super-2 number, since 2×148617969² = 44174601419369922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (148612969) 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 in 3 ways as a sum of consecutive naturals, for example, 24769659 + ... + 24769664.

It is an arithmetic number, because the mean of its divisors is an integer number (49539324).

Almost surely, 2^148617969 is an apocalyptic number.

It is an amenable number.

148617969 is a deficient number, since it is larger than the sum of its proper divisors (49539327).

148617969 is an equidigital number, since it uses as much as digits as its factorization.

148617969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49539326.

The product of its digits is 653184, while the sum is 51.

The square root of 148617969 is about 12190.8969727416. The cubic root of 148617969 is about 529.6924393323.

The spelling of 148617969 in words is "one hundred forty-eight million, six hundred seventeen thousand, nine hundred sixty-nine".