407699881 has 2 divisors, whose sum is σ = 407699882. Its totient is φ = 407699880.

The previous prime is 407699869. The next prime is 407699923. The reversal of 407699881 is 188996704.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311346025 + 96353856 = 17645^2 + 9816^2 .

It is a cyclic number.

It is not a de Polignac number, because 407699881 - 2²⁵ = 374145449 is a prime.

It is a super-2 number, since 2×407699881² = 332438385934828322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (407699801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203849940 + 203849941.

It is an arithmetic number, because the mean of its divisors is an integer number (203849941).

Almost surely, 2^407699881 is an apocalyptic number.

It is an amenable number.

407699881 is a deficient number, since it is larger than the sum of its proper divisors (1).

407699881 is an equidigital number, since it uses as much as digits as its factorization.

407699881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 407699881 is about 20191.5794577839. The cubic root of 407699881 is about 741.5040513630.

The spelling of 407699881 in words is "four hundred seven million, six hundred ninety-nine thousand, eight hundred eighty-one".