838451413 has 8 divisors (see below), whose sum is σ = 869993432. Its totient is φ = 807376896.

The previous prime is 838451387. The next prime is 838451417. The reversal of 838451413 is 314154838.

It can be written as a sum of positive squares in 4 ways, for example, as 252714609 + 585736804 = 15897^2 + 24202^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 838451413 - 2⁵ = 838451381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838451417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113220 + ... + 120397.

It is an arithmetic number, because the mean of its divisors is an integer number (108749179).

Almost surely, 2^838451413 is an apocalyptic number.

It is an amenable number.

838451413 is a deficient number, since it is larger than the sum of its proper divisors (31542019).

838451413 is a wasteful number, since it uses less digits than its factorization.

838451413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233751.

The product of its digits is 46080, while the sum is 37.

The square root of 838451413 is about 28956.0255042021. The cubic root of 838451413 is about 942.9586171984.

It can be divided in two parts, 83845 and 1413, that added together give a palindrome (85258).

The spelling of 838451413 in words is "eight hundred thirty-eight million, four hundred fifty-one thousand, four hundred thirteen".