402647527397 has 2 divisors, whose sum is σ = 402647527398. Its totient is φ = 402647527396.

The previous prime is 402647527379. The next prime is 402647527409. The reversal of 402647527397 is 793725746204.

It is a happy number.

Together with previous prime (402647527379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401184158881 + 1463368516 = 633391^2 + 38254^2 .

It is a cyclic number.

It is not a de Polignac number, because 402647527397 - 2²² = 402643333093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402647526397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201323763698 + 201323763699.

It is an arithmetic number, because the mean of its divisors is an integer number (201323763699).

Almost surely, 2^402647527397 is an apocalyptic number.

It is an amenable number.

402647527397 is a deficient number, since it is larger than the sum of its proper divisors (1).

402647527397 is an equidigital number, since it uses as much as digits as its factorization.

402647527397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 402647527397 in words is "four hundred two billion, six hundred forty-seven million, five hundred twenty-seven thousand, three hundred ninety-seven".