1373221407 has 8 divisors (see below), whose sum is σ = 1831534720. Its totient is φ = 915194520.

The previous prime is 1373221391. The next prime is 1373221411. The reversal of 1373221407 is 7041223731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1373221407 - 2⁴ = 1373221391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373221307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60157 + ... + 79782.

It is an arithmetic number, because the mean of its divisors is an integer number (228941840).

Almost surely, 2^1373221407 is an apocalyptic number.

1373221407 is a deficient number, since it is larger than the sum of its proper divisors (458313313).

1373221407 is a wasteful number, since it uses less digits than its factorization.

1373221407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143213.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 1373221407 is about 37057.0021318509. The cubic root of 1373221407 is about 1111.5103771415.

The spelling of 1373221407 in words is "one billion, three hundred seventy-three million, two hundred twenty-one thousand, four hundred seven".