40148587 has 4 divisors (see below), whose sum is σ = 40161496. Its totient is φ = 40135680.

The previous prime is 40148573. The next prime is 40148599. The reversal of 40148587 is 78584104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40148587 - 2¹⁵ = 40115819 is a prime.

It is a super-2 number, since 2×40148587² = 3223818076193138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40148527) 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, 1387 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (10040374).

Almost surely, 2^40148587 is an apocalyptic number.

40148587 is a deficient number, since it is larger than the sum of its proper divisors (12909).

40148587 is an equidigital number, since it uses as much as digits as its factorization.

40148587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12908.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 40148587 is about 6336.2912654012. The cubic root of 40148587 is about 342.4181330607.

The spelling of 40148587 in words is "forty million, one hundred forty-eight thousand, five hundred eighty-seven".