408388737949 has 2 divisors, whose sum is σ = 408388737950. Its totient is φ = 408388737948.

The previous prime is 408388737931. The next prime is 408388737959. The reversal of 408388737949 is 949737883804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244935908100 + 163452829849 = 494910^2 + 404293^2 .

It is a cyclic number.

It is not a de Polignac number, because 408388737949 - 2¹⁵ = 408388705181 is a prime.

It is a super-2 number, since 2×408388737949² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408388737959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204194368974 + 204194368975.

It is an arithmetic number, because the mean of its divisors is an integer number (204194368975).

Almost surely, 2^408388737949 is an apocalyptic number.

It is an amenable number.

408388737949 is a deficient number, since it is larger than the sum of its proper divisors (1).

408388737949 is an equidigital number, since it uses as much as digits as its factorization.

408388737949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 408388737949 in words is "four hundred eight billion, three hundred eighty-eight million, seven hundred thirty-seven thousand, nine hundred forty-nine".