40140049 has 2 divisors, whose sum is σ = 40140050. Its totient is φ = 40140048.

The previous prime is 40140047. The next prime is 40140053. The reversal of 40140049 is 94004104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24930049 + 15210000 = 4993^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 40140049 - 2¹ = 40140047 is a prime.

It is a super-2 number, since 2×40140049² = 3222447067444802, which contains 22 as substring.

Together with 40140047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40140047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20070024 + 20070025.

It is an arithmetic number, because the mean of its divisors is an integer number (20070025).

Almost surely, 2^40140049 is an apocalyptic number.

It is an amenable number.

40140049 is a deficient number, since it is larger than the sum of its proper divisors (1).

40140049 is an equidigital number, since it uses as much as digits as its factorization.

40140049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40140049 is about 6335.6174916104. The cubic root of 40140049 is about 342.3938584555.

The spelling of 40140049 in words is "forty million, one hundred forty thousand, forty-nine".