479971381 has 2 divisors, whose sum is σ = 479971382. Its totient is φ = 479971380.

The previous prime is 479971367. The next prime is 479971399. The reversal of 479971381 is 183179974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382554481 + 97416900 = 19559^2 + 9870^2 .

It is a cyclic number.

It is not a de Polignac number, because 479971381 - 2¹¹ = 479969333 is a prime.

It is a super-2 number, since 2×479971381² = 460745053158094322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479971301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239985690 + 239985691.

It is an arithmetic number, because the mean of its divisors is an integer number (239985691).

Almost surely, 2^479971381 is an apocalyptic number.

It is an amenable number.

479971381 is a deficient number, since it is larger than the sum of its proper divisors (1).

479971381 is an equidigital number, since it uses as much as digits as its factorization.

479971381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 479971381 is about 21908.2491541428. The cubic root of 479971381 is about 782.9579668694.

The spelling of 479971381 in words is "four hundred seventy-nine million, nine hundred seventy-one thousand, three hundred eighty-one".