40234406249 has 2 divisors, whose sum is σ = 40234406250. Its totient is φ = 40234406248.

The previous prime is 40234406231. The next prime is 40234406287. The reversal of 40234406249 is 94260443204.

It is an a-pointer prime, because the next prime (40234406287) can be obtained adding 40234406249 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38154590224 + 2079816025 = 195332^2 + 45605^2 .

It is a cyclic number.

It is not a de Polignac number, because 40234406249 - 2⁸ = 40234405993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40234409249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117203124 + 20117203125.

It is an arithmetic number, because the mean of its divisors is an integer number (20117203125).

Almost surely, 2^40234406249 is an apocalyptic number.

It is an amenable number.

40234406249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40234406249 is an equidigital number, since it uses as much as digits as its factorization.

40234406249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 40234406249 in words is "forty billion, two hundred thirty-four million, four hundred six thousand, two hundred forty-nine".