40145093 has 4 divisors (see below), whose sum is σ = 41440128. Its totient is φ = 38850060.

The previous prime is 40145089. The next prime is 40145113. The reversal of 40145093 is 39054104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40145093 - 2² = 40145089 is a prime.

It is a super-2 number, since 2×40145093² = 3223256983957298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40145023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647471 + ... + 647532.

It is an arithmetic number, because the mean of its divisors is an integer number (10360032).

Almost surely, 2^40145093 is an apocalyptic number.

It is an amenable number.

40145093 is a deficient number, since it is larger than the sum of its proper divisors (1295035).

40145093 is a wasteful number, since it uses less digits than its factorization.

40145093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295034.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40145093 is about 6336.0155460668. The cubic root of 40145093 is about 342.4081995964.

Adding to 40145093 its reverse (39054104), we get a palindrome (79199197).

The spelling of 40145093 in words is "forty million, one hundred forty-five thousand, ninety-three".