1337221409 has 2 divisors, whose sum is σ = 1337221410. Its totient is φ = 1337221408.

The previous prime is 1337221397. The next prime is 1337221423. The reversal of 1337221409 is 9041227331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1332469009 + 4752400 = 36503^2 + 2180^2 .

It is an emirp because it is prime and its reverse (9041227331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1337221409 - 2⁸ = 1337221153 is a prime.

It is a super-2 number, since 2×1337221409² = 3576322193375890562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1337221609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668610704 + 668610705.

It is an arithmetic number, because the mean of its divisors is an integer number (668610705).

Almost surely, 2^1337221409 is an apocalyptic number.

It is an amenable number.

1337221409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337221409 is an equidigital number, since it uses as much as digits as its factorization.

1337221409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1337221409 is about 36568.0380797220. The cubic root of 1337221409 is about 1101.7112233189.

The spelling of 1337221409 in words is "one billion, three hundred thirty-seven million, two hundred twenty-one thousand, four hundred nine".