148999997 has 4 divisors (see below), whose sum is σ = 149048160. Its totient is φ = 148951836.

The previous prime is 148999993. The next prime is 149000017. The reversal of 148999997 is 799999841.

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.

It is a cyclic number.

It is not a de Polignac number, because 148999997 - 2² = 148999993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148999993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097 + ... + 25742.

It is an arithmetic number, because the mean of its divisors is an integer number (37262040).

Almost surely, 2^148999997 is an apocalyptic number.

It is an amenable number.

148999997 is a deficient number, since it is larger than the sum of its proper divisors (48163).

148999997 is an equidigital number, since it uses as much as digits as its factorization.

148999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48162.

The product of its digits is 13226976, while the sum is 65.

The square root of 148999997 is about 12206.5554928489. Note that the first 3 decimals coincide. The cubic root of 148999997 is about 530.1459156801.

The spelling of 148999997 in words is "one hundred forty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-seven".