145414939 has 2 divisors, whose sum is σ = 145414940. Its totient is φ = 145414938.

The previous prime is 145414937. The next prime is 145414943. The reversal of 145414939 is 939414541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145414939 - 2¹ = 145414937 is a prime.

It is a super-2 number, since 2×145414939² = 42291008968747442, which contains 22 as substring.

Together with 145414937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145414933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72707469 + 72707470.

It is an arithmetic number, because the mean of its divisors is an integer number (72707470).

Almost surely, 2^145414939 is an apocalyptic number.

145414939 is a deficient number, since it is larger than the sum of its proper divisors (1).

145414939 is an equidigital number, since it uses as much as digits as its factorization.

145414939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 145414939 is about 12058.8116744562. The cubic root of 145414939 is about 525.8594406771.

The spelling of 145414939 in words is "one hundred forty-five million, four hundred fourteen thousand, nine hundred thirty-nine".