373696409 has 2 divisors, whose sum is σ = 373696410. Its totient is φ = 373696408.

The previous prime is 373696343. The next prime is 373696423. The reversal of 373696409 is 904696373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239785225 + 133911184 = 15485^2 + 11572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-373696409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (373696429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186848204 + 186848205.

It is an arithmetic number, because the mean of its divisors is an integer number (186848205).

Almost surely, 2^373696409 is an apocalyptic number.

It is an amenable number.

373696409 is a deficient number, since it is larger than the sum of its proper divisors (1).

373696409 is an equidigital number, since it uses as much as digits as its factorization.

373696409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 47.

The square root of 373696409 is about 19331.2288538520. The cubic root of 373696409 is about 720.2882134461.

The spelling of 373696409 in words is "three hundred seventy-three million, six hundred ninety-six thousand, four hundred nine".