738878447 has 2 divisors, whose sum is σ = 738878448. Its totient is φ = 738878446.

The previous prime is 738878407. The next prime is 738878449. The reversal of 738878447 is 744878837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 738878447 - 2¹⁰ = 738877423 is a prime.

It is a super-2 number, since 2×738878447² = 1091882718882263618, which contains 22 as substring.

Together with 738878449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 738878392 and 738878401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738878449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369439223 + 369439224.

It is an arithmetic number, because the mean of its divisors is an integer number (369439224).

Almost surely, 2^738878447 is an apocalyptic number.

738878447 is a deficient number, since it is larger than the sum of its proper divisors (1).

738878447 is an equidigital number, since it uses as much as digits as its factorization.

738878447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8429568, while the sum is 56.

The square root of 738878447 is about 27182.3186465025. The cubic root of 738878447 is about 904.0469794254.

The spelling of 738878447 in words is "seven hundred thirty-eight million, eight hundred seventy-eight thousand, four hundred forty-seven".