146928989 has 2 divisors, whose sum is σ = 146928990. Its totient is φ = 146928988.

The previous prime is 146928973. The next prime is 146929001. The reversal of 146928989 is 989829641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89624089 + 57304900 = 9467^2 + 7570^2 .

It is a cyclic number.

It is not a de Polignac number, because 146928989 - 2⁴ = 146928973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146928949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73464494 + 73464495.

It is an arithmetic number, because the mean of its divisors is an integer number (73464495).

Almost surely, 2^146928989 is an apocalyptic number.

It is an amenable number.

146928989 is a deficient number, since it is larger than the sum of its proper divisors (1).

146928989 is an equidigital number, since it uses as much as digits as its factorization.

146928989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 56.

The square root of 146928989 is about 12121.4268549540. The cubic root of 146928989 is about 527.6782132587.

The spelling of 146928989 in words is "one hundred forty-six million, nine hundred twenty-eight thousand, nine hundred eighty-nine".