145279999 has 8 divisors (see below), whose sum is σ = 147806208. Its totient is φ = 142775640.

The previous prime is 145279997. The next prime is 145280021. The reversal of 145279999 is 999972541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145279999 - 2¹ = 145279997 is a prime.

It is a super-2 number, since 2×145279999² = 42212556218880002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145279991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8244 + ... + 18934.

It is an arithmetic number, because the mean of its divisors is an integer number (18475776).

Almost surely, 2^145279999 is an apocalyptic number.

145279999 is a deficient number, since it is larger than the sum of its proper divisors (2526209).

145279999 is a wasteful number, since it uses less digits than its factorization.

145279999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10925.

The product of its digits is 1837080, while the sum is 55.

The square root of 145279999 is about 12053.2152971728. The cubic root of 145279999 is about 525.6967305869.

The spelling of 145279999 in words is "one hundred forty-five million, two hundred seventy-nine thousand, nine hundred ninety-nine".