145408893 has 8 divisors (see below), whose sum is σ = 221575488. Its totient is φ = 83090784.

The previous prime is 145408883. The next prime is 145408897. The reversal of 145408893 is 398804541.

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

It is not a de Polignac number, because 145408893 - 2¹⁴ = 145392509 is a prime.

It is a super-2 number, since 2×145408893² = 42287492326970898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145408897) 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, 3462096 + ... + 3462137.

It is an arithmetic number, because the mean of its divisors is an integer number (27696936).

Almost surely, 2^145408893 is an apocalyptic number.

It is an amenable number.

145408893 is a deficient number, since it is larger than the sum of its proper divisors (76166595).

145408893 is an equidigital number, since it uses as much as digits as its factorization.

145408893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924243.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 145408893 is about 12058.5609837990. The cubic root of 145408893 is about 525.8521525900.

The spelling of 145408893 in words is "one hundred forty-five million, four hundred eight thousand, eight hundred ninety-three".