407221373 has 8 divisors (see below), whose sum is σ = 439284216. Its totient is φ = 375264000.

The previous prime is 407221327. The next prime is 407221387. The reversal of 407221373 is 373122704.

It can be written as a sum of positive squares in 4 ways, for example, as 95981209 + 311240164 = 9797^2 + 17642^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 407221373 - 2⁸ = 407221117 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 (407221273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18248 + ... + 33873.

It is an arithmetic number, because the mean of its divisors is an integer number (54910527).

Almost surely, 2^407221373 is an apocalyptic number.

It is an amenable number.

407221373 is a deficient number, since it is larger than the sum of its proper divisors (32062843).

407221373 is a wasteful number, since it uses less digits than its factorization.

407221373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52735.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 407221373 is about 20179.7267820949. The cubic root of 407221373 is about 741.2138423631.

The spelling of 407221373 in words is "four hundred seven million, two hundred twenty-one thousand, three hundred seventy-three".