145439007 has 12 divisors (see below), whose sum is σ = 225579096. Its totient is φ = 83107920.

The previous prime is 145438999. The next prime is 145439017. The reversal of 145439007 is 700934541.

It is not a de Polignac number, because 145439007 - 2³ = 145438999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145439017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494544 + ... + 494837.

It is an arithmetic number, because the mean of its divisors is an integer number (18798258).

Almost surely, 2^145439007 is an apocalyptic number.

145439007 is a deficient number, since it is larger than the sum of its proper divisors (80140089).

145439007 is an equidigital number, since it uses as much as digits as its factorization.

145439007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989398 (or 989391 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 145439007 is about 12059.8095756111. The cubic root of 145439007 is about 525.8884511922. Note that the first 3 decimals are identical.

The spelling of 145439007 in words is "one hundred forty-five million, four hundred thirty-nine thousand, seven".