738664949 has 12 divisors (see below), whose sum is σ = 814019052. Its totient is φ = 669778560.

The previous prime is 738664939. The next prime is 738664963. The reversal of 738664949 is 949466837.

It can be written as a sum of positive squares in 2 ways, for example, as 668222500 + 70442449 = 25850^2 + 8393^2 .

It is a de Polignac number, because none of the positive numbers 2^k-738664949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 738664894 and 738664903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738664939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40349 + ... + 55725.

It is an arithmetic number, because the mean of its divisors is an integer number (67834921).

Almost surely, 2^738664949 is an apocalyptic number.

It is an amenable number.

738664949 is a deficient number, since it is larger than the sum of its proper divisors (75354103).

738664949 is a wasteful number, since it uses less digits than its factorization.

738664949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15785 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 56.

The square root of 738664949 is about 27178.3912143453. The cubic root of 738664949 is about 903.9598966240.

The spelling of 738664949 in words is "seven hundred thirty-eight million, six hundred sixty-four thousand, nine hundred forty-nine".