146889973 has 2 divisors, whose sum is σ = 146889974. Its totient is φ = 146889972.

The previous prime is 146889923. The next prime is 146890019. The reversal of 146889973 is 379988641.

146889973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130713489 + 16176484 = 11433^2 + 4022^2 .

It is a cyclic number.

It is not a de Polignac number, because 146889973 - 2²¹ = 144792821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146889923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73444986 + 73444987.

It is an arithmetic number, because the mean of its divisors is an integer number (73444987).

Almost surely, 2^146889973 is an apocalyptic number.

It is an amenable number.

146889973 is a deficient number, since it is larger than the sum of its proper divisors (1).

146889973 is an equidigital number, since it uses as much as digits as its factorization.

146889973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 146889973 is about 12119.8173666108. The cubic root of 146889973 is about 527.6315019961.

The spelling of 146889973 in words is "one hundred forty-six million, eight hundred eighty-nine thousand, nine hundred seventy-three".