145972393 has 8 divisors (see below), whose sum is σ = 166898880. Its totient is φ = 125064240.

The previous prime is 145972381. The next prime is 145972439. The reversal of 145972393 is 393279541.

145972393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 145972393 - 2¹³ = 145964201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145972093) 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, 27138 + ... + 32068.

It is an arithmetic number, because the mean of its divisors is an integer number (20862360).

Almost surely, 2^145972393 is an apocalyptic number.

It is an amenable number.

145972393 is a deficient number, since it is larger than the sum of its proper divisors (20926487).

145972393 is an equidigital number, since it uses as much as digits as its factorization.

145972393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167.

The product of its digits is 204120, while the sum is 43.

The square root of 145972393 is about 12081.9035337980. The cubic root of 145972393 is about 526.5305515806.

The spelling of 145972393 in words is "one hundred forty-five million, nine hundred seventy-two thousand, three hundred ninety-three".