40201949 has 2 divisors, whose sum is σ = 40201950. Its totient is φ = 40201948.

The previous prime is 40201937. The next prime is 40201969. The reversal of 40201949 is 94910204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 12376324 = 5275^2 + 3518^2 .

It is a cyclic number.

It is not a de Polignac number, because 40201949 - 2²⁴ = 23424733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40201919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20100974 + 20100975.

It is an arithmetic number, because the mean of its divisors is an integer number (20100975).

Almost surely, 2^40201949 is an apocalyptic number.

It is an amenable number.

40201949 is a deficient number, since it is larger than the sum of its proper divisors (1).

40201949 is an equidigital number, since it uses as much as digits as its factorization.

40201949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40201949 is about 6340.5006900086. The cubic root of 40201949 is about 342.5697700050.

The spelling of 40201949 in words is "forty million, two hundred one thousand, nine hundred forty-nine".