40148597 has 4 divisors (see below), whose sum is σ = 40168140. Its totient is φ = 40129056.

The previous prime is 40148573. The next prime is 40148599. The reversal of 40148597 is 79584104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15952036 + 24196561 = 3994^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 40148597 - 2⁶ = 40148533 is a prime.

It is a super-2 number, since 2×40148597² = 3223819682136818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40148597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40148599) 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, 6272 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (10042035).

Almost surely, 2^40148597 is an apocalyptic number.

It is an amenable number.

40148597 is a deficient number, since it is larger than the sum of its proper divisors (19543).

40148597 is a wasteful number, since it uses less digits than its factorization.

40148597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19542.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 40148597 is about 6336.2920545063. The cubic root of 40148597 is about 342.4181614899.

The spelling of 40148597 in words is "forty million, one hundred forty-eight thousand, five hundred ninety-seven".