40493219629 has 2 divisors, whose sum is σ = 40493219630. Its totient is φ = 40493219628.

The previous prime is 40493219597. The next prime is 40493219633. The reversal of 40493219629 is 92691239404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25948377225 + 14544842404 = 161085^2 + 120602^2 .

It is a cyclic number.

It is not a de Polignac number, because 40493219629 - 2⁵ = 40493219597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40493219699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20246609814 + 20246609815.

It is an arithmetic number, because the mean of its divisors is an integer number (20246609815).

Almost surely, 2^40493219629 is an apocalyptic number.

It is an amenable number.

40493219629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40493219629 is an equidigital number, since it uses as much as digits as its factorization.

40493219629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 40493219629 in words is "forty billion, four hundred ninety-three million, two hundred nineteen thousand, six hundred twenty-nine".