373449221 has 2 divisors, whose sum is σ = 373449222. Its totient is φ = 373449220.

The previous prime is 373449179. The next prime is 373449227. The reversal of 373449221 is 122944373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334524100 + 38925121 = 18290^2 + 6239^2 .

It is an emirp because it is prime and its reverse (122944373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 373449221 - 2²² = 369254917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373449227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186724610 + 186724611.

It is an arithmetic number, because the mean of its divisors is an integer number (186724611).

Almost surely, 2^373449221 is an apocalyptic number.

It is an amenable number.

373449221 is a deficient number, since it is larger than the sum of its proper divisors (1).

373449221 is an equidigital number, since it uses as much as digits as its factorization.

373449221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 373449221 is about 19324.8343071810. The cubic root of 373449221 is about 720.1293626870.

The spelling of 373449221 in words is "three hundred seventy-three million, four hundred forty-nine thousand, two hundred twenty-one".