148970909 has 2 divisors, whose sum is σ = 148970910. Its totient is φ = 148970908.

The previous prime is 148970879. The next prime is 148970947. The reversal of 148970909 is 909079841.

148970909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139759684 + 9211225 = 11822^2 + 3035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148970909 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 (148970509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74485454 + 74485455.

It is an arithmetic number, because the mean of its divisors is an integer number (74485455).

Almost surely, 2^148970909 is an apocalyptic number.

It is an amenable number.

148970909 is a deficient number, since it is larger than the sum of its proper divisors (1).

148970909 is an equidigital number, since it uses as much as digits as its factorization.

148970909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 148970909 is about 12205.3639437749. The cubic root of 148970909 is about 530.1114148114. Note that the first 3 decimals are identical.

The spelling of 148970909 in words is "one hundred forty-eight million, nine hundred seventy thousand, nine hundred nine".