145411899 has 4 divisors (see below), whose sum is σ = 193882536. Its totient is φ = 96941264.

The previous prime is 145411879. The next prime is 145411901. The reversal of 145411899 is 998114541.

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 145411899 - 2⁵ = 145411867 is a prime.

It is a super-2 number, since 2×145411899² = 42289240741572402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145411899.

It is not an unprimeable number, because it can be changed into a prime (145411859) 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, 24235314 + ... + 24235319.

It is an arithmetic number, because the mean of its divisors is an integer number (48470634).

Almost surely, 2^145411899 is an apocalyptic number.

145411899 is a deficient number, since it is larger than the sum of its proper divisors (48470637).

145411899 is an equidigital number, since it uses as much as digits as its factorization.

145411899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48470636.

The product of its digits is 51840, while the sum is 42.

The square root of 145411899 is about 12058.6856248930. The cubic root of 145411899 is about 525.8557761663.

The spelling of 145411899 in words is "one hundred forty-five million, four hundred eleven thousand, eight hundred ninety-nine".