40148249 has 2 divisors, whose sum is σ = 40148250. Its totient is φ = 40148248.

The previous prime is 40148231. The next prime is 40148279. The reversal of 40148249 is 94284104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 1708249 = 6200^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 40148249 - 2⁸ = 40147993 is a prime.

It is a super-2 number, since 2×40148249² = 3223763795532002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40148279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20074124 + 20074125.

It is an arithmetic number, because the mean of its divisors is an integer number (20074125).

Almost surely, 2^40148249 is an apocalyptic number.

It is an amenable number.

40148249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40148249 is an equidigital number, since it uses as much as digits as its factorization.

40148249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40148249 is about 6336.2645935914. The cubic root of 40148249 is about 342.4171721497.

The spelling of 40148249 in words is "forty million, one hundred forty-eight thousand, two hundred forty-nine".