145308969 has 12 divisors (see below), whose sum is σ = 226036356. Its totient is φ = 89420832.

The previous prime is 145308967. The next prime is 145308971. The reversal of 145308969 is 969803541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145308967) and next prime (145308971).

It can be written as a sum of positive squares in 2 ways, for example, as 96825600 + 48483369 = 9840^2 + 6963^2 .

It is not a de Polignac number, because 145308969 - 2¹ = 145308967 is a prime.

It is a super-2 number, since 2×145308969² = 42229392943685922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145308967) 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 11 ways as a sum of consecutive naturals, for example, 620862 + ... + 621095.

It is an arithmetic number, because the mean of its divisors is an integer number (18836363).

Almost surely, 2^145308969 is an apocalyptic number.

It is an amenable number.

145308969 is a deficient number, since it is larger than the sum of its proper divisors (80727387).

145308969 is a wasteful number, since it uses less digits than its factorization.

145308969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241976 (or 1241973 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 145308969 is about 12054.4169912941. The cubic root of 145308969 is about 525.7316709829.

The spelling of 145308969 in words is "one hundred forty-five million, three hundred eight thousand, nine hundred sixty-nine".