145789399 has 16 divisors (see below), whose sum is σ = 180726336. Its totient is φ = 114739200.

The previous prime is 145789381. The next prime is 145789403. The reversal of 145789399 is 993987541.

It is a cyclic number.

It is not a de Polignac number, because 145789399 - 2⁷ = 145789271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145789099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10062 + ... + 19819.

It is an arithmetic number, because the mean of its divisors is an integer number (11295396).

Almost surely, 2^145789399 is an apocalyptic number.

145789399 is a deficient number, since it is larger than the sum of its proper divisors (34936937).

145789399 is a wasteful number, since it uses less digits than its factorization.

145789399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29946.

The product of its digits is 2449440, while the sum is 55.

The square root of 145789399 is about 12074.3280972483. The cubic root of 145789399 is about 526.3104363913.

The spelling of 145789399 in words is "one hundred forty-five million, seven hundred eighty-nine thousand, three hundred ninety-nine".