145839009 has 8 divisors (see below), whose sum is σ = 199194912. Its totient is φ = 94854560.

The previous prime is 145839007. The next prime is 145839011. The reversal of 145839009 is 900938541.

It is an interprime number because it is at equal distance from previous prime (145839007) and next prime (145839011).

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 145839009 - 2¹ = 145839007 is a prime.

It is a super-2 number, since 2×145839009² = 42538033092204162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145839007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592719 + ... + 592964.

It is an arithmetic number, because the mean of its divisors is an integer number (24899364).

Almost surely, 2^145839009 is an apocalyptic number.

It is an amenable number.

145839009 is a deficient number, since it is larger than the sum of its proper divisors (53355903).

145839009 is a wasteful number, since it uses less digits than its factorization.

145839009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185727.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 145839009 is about 12076.3822811304. The cubic root of 145839009 is about 526.3701282021.

The spelling of 145839009 in words is "one hundred forty-five million, eight hundred thirty-nine thousand, nine".