40587949 has 2 divisors, whose sum is σ = 40587950. Its totient is φ = 40587948.

The previous prime is 40587923. The next prime is 40587973. The reversal of 40587949 is 94978504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38975049 + 1612900 = 6243^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 40587949 - 2⁵ = 40587917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40587899 and 40587908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40587049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20293974 + 20293975.

It is an arithmetic number, because the mean of its divisors is an integer number (20293975).

Almost surely, 2^40587949 is an apocalyptic number.

It is an amenable number.

40587949 is a deficient number, since it is larger than the sum of its proper divisors (1).

40587949 is an equidigital number, since it uses as much as digits as its factorization.

40587949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 40587949 is about 6370.8672094151. The cubic root of 40587949 is about 343.6626769266.

The spelling of 40587949 in words is "forty million, five hundred eighty-seven thousand, nine hundred forty-nine".