148920889 has 8 divisors (see below), whose sum is σ = 161045192. Its totient is φ = 136892160.

The previous prime is 148920839. The next prime is 148920907. The reversal of 148920889 is 988029841.

It can be written as a sum of positive squares in 4 ways, for example, as 63043600 + 85877289 = 7940^2 + 9267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148920889 - 2¹¹ = 148918841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148920809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20634 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (20130649).

Almost surely, 2^148920889 is an apocalyptic number.

It is an amenable number.

148920889 is a deficient number, since it is larger than the sum of its proper divisors (12124303).

148920889 is a wasteful number, since it uses less digits than its factorization.

148920889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47787.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 148920889 is about 12203.3146726617. The cubic root of 148920889 is about 530.0520762880.

The spelling of 148920889 in words is "one hundred forty-eight million, nine hundred twenty thousand, eight hundred eighty-nine".