402754397249 has 2 divisors, whose sum is σ = 402754397250. Its totient is φ = 402754397248.

The previous prime is 402754397219. The next prime is 402754397251. The reversal of 402754397249 is 942793457204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263983246849 + 138771150400 = 513793^2 + 372520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402754397249 is a prime.

It is a super-2 number, since 2×402754397249² (a number of 24 digits) contains 22 as substring.

Together with 402754397251, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402754397194 and 402754397203.

It is not a weakly prime, because it can be changed into another prime (402754397219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201377198624 + 201377198625.

It is an arithmetic number, because the mean of its divisors is an integer number (201377198625).

Almost surely, 2^402754397249 is an apocalyptic number.

It is an amenable number.

402754397249 is a deficient number, since it is larger than the sum of its proper divisors (1).

402754397249 is an equidigital number, since it uses as much as digits as its factorization.

402754397249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 402754397249 in words is "four hundred two billion, seven hundred fifty-four million, three hundred ninety-seven thousand, two hundred forty-nine".