373402009 has 2 divisors, whose sum is σ = 373402010. Its totient is φ = 373402008.

The previous prime is 373401983. The next prime is 373402021. The reversal of 373402009 is 900204373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291897225 + 81504784 = 17085^2 + 9028^2 .

It is a cyclic number.

It is not a de Polignac number, because 373402009 - 2¹³ = 373393817 is a prime.

It is not a weakly prime, because it can be changed into another prime (373402069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186701004 + 186701005.

It is an arithmetic number, because the mean of its divisors is an integer number (186701005).

Almost surely, 2^373402009 is an apocalyptic number.

It is an amenable number.

373402009 is a deficient number, since it is larger than the sum of its proper divisors (1).

373402009 is an equidigital number, since it uses as much as digits as its factorization.

373402009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 373402009 is about 19323.6127315779. The cubic root of 373402009 is about 720.0990148036.

The spelling of 373402009 in words is "three hundred seventy-three million, four hundred two thousand, nine".