145445699 has 4 divisors (see below), whose sum is σ = 166223664. Its totient is φ = 124667736.

The previous prime is 145445689. The next prime is 145445719. The reversal of 145445699 is 996544541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145445699 - 2¹⁶ = 145380163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145445609) 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 3 ways as a sum of consecutive naturals, for example, 10388972 + ... + 10388985.

It is an arithmetic number, because the mean of its divisors is an integer number (41555916).

Almost surely, 2^145445699 is an apocalyptic number.

145445699 is a deficient number, since it is larger than the sum of its proper divisors (20777965).

145445699 is an equidigital number, since it uses as much as digits as its factorization.

145445699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20777964.

The product of its digits is 777600, while the sum is 47.

The square root of 145445699 is about 12060.0870229033. The cubic root of 145445699 is about 525.8965168677.

The spelling of 145445699 in words is "one hundred forty-five million, four hundred forty-five thousand, six hundred ninety-nine".