407138449 has 2 divisors, whose sum is σ = 407138450. Its totient is φ = 407138448.

The previous prime is 407138419. The next prime is 407138483. The reversal of 407138449 is 944831704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291726400 + 115412049 = 17080^2 + 10743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-407138449 is a prime.

It is a super-4 number, since 4×407138449⁴ (a number of 36 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (407138419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203569224 + 203569225.

It is an arithmetic number, because the mean of its divisors is an integer number (203569225).

Almost surely, 2^407138449 is an apocalyptic number.

It is an amenable number.

407138449 is a deficient number, since it is larger than the sum of its proper divisors (1).

407138449 is an equidigital number, since it uses as much as digits as its factorization.

407138449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 407138449 is about 20177.6720411449. The cubic root of 407138449 is about 741.1635269054.

The spelling of 407138449 in words is "four hundred seven million, one hundred thirty-eight thousand, four hundred forty-nine".