145436899 has 4 divisors (see below), whose sum is σ = 149367664. Its totient is φ = 141506136.

The previous prime is 145436891. The next prime is 145436923. The reversal of 145436899 is 998634541.

It is a happy number.

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 145436899 - 2³ = 145436891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145436891) 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, 1965327 + ... + 1965400.

It is an arithmetic number, because the mean of its divisors is an integer number (37341916).

Almost surely, 2^145436899 is an apocalyptic number.

145436899 is a deficient number, since it is larger than the sum of its proper divisors (3930765).

145436899 is an equidigital number, since it uses as much as digits as its factorization.

145436899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930764.

The product of its digits is 933120, while the sum is 49.

The square root of 145436899 is about 12059.7221775628. The cubic root of 145436899 is about 525.8859104290.

The spelling of 145436899 in words is "one hundred forty-five million, four hundred thirty-six thousand, eight hundred ninety-nine".