407696381 has 2 divisors, whose sum is σ = 407696382. Its totient is φ = 407696380.

The previous prime is 407696369. The next prime is 407696383. The reversal of 407696381 is 183696704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406627225 + 1069156 = 20165^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 407696381 - 2¹⁰ = 407695357 is a prime.

It is a super-2 number, since 2×407696381² = 332432678160994322, which contains 22 as substring.

Together with 407696383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (407696383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203848190 + 203848191.

It is an arithmetic number, because the mean of its divisors is an integer number (203848191).

Almost surely, 2^407696381 is an apocalyptic number.

It is an amenable number.

407696381 is a deficient number, since it is larger than the sum of its proper divisors (1).

407696381 is an equidigital number, since it uses as much as digits as its factorization.

407696381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 407696381 is about 20191.4927878055. The cubic root of 407696381 is about 741.5019294822.

The spelling of 407696381 in words is "four hundred seven million, six hundred ninety-six thousand, three hundred eighty-one".