1409969217497 has 2 divisors, whose sum is σ = 1409969217498. Its totient is φ = 1409969217496.

The previous prime is 1409969217479. The next prime is 1409969217509. The reversal of 1409969217497 is 7947129699041.

It is a happy number.

Together with previous prime (1409969217479) 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., 1329383634121 + 80585583376 = 1152989^2 + 283876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1409969217497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1409969217997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704984608748 + 704984608749.

It is an arithmetic number, because the mean of its divisors is an integer number (704984608749).

Almost surely, 2^{1409969217497} is an apocalyptic number.

It is an amenable number.

1409969217497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409969217497 is an equidigital number, since it uses as much as digits as its factorization.

1409969217497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 1409969217497 in words is "one trillion, four hundred nine billion, nine hundred sixty-nine million, two hundred seventeen thousand, four hundred ninety-seven".