145786999 has 4 divisors (see below), whose sum is σ = 145953360. Its totient is φ = 145620640.

The previous prime is 145786961. The next prime is 145787009. The reversal of 145786999 is 999687541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999687541 = 12011 ⋅83231.

It is a cyclic number.

It is not a de Polignac number, because 145786999 - 2¹⁷ = 145655927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145786499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81859 + ... + 83620.

It is an arithmetic number, because the mean of its divisors is an integer number (36488340).

Almost surely, 2^145786999 is an apocalyptic number.

145786999 is a deficient number, since it is larger than the sum of its proper divisors (166361).

145786999 is an equidigital number, since it uses as much as digits as its factorization.

145786999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166360.

The product of its digits is 4898880, while the sum is 58.

The square root of 145786999 is about 12074.2287124271. The cubic root of 145786999 is about 526.3075483167.

The spelling of 145786999 in words is "one hundred forty-five million, seven hundred eighty-six thousand, nine hundred ninety-nine".