5438621029 has 4 divisors (see below), whose sum is σ = 5438809900. Its totient is φ = 5438432160.

The previous prime is 5438621017. The next prime is 5438621057. The reversal of 5438621029 is 9201268345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9201268345 = 5 ⋅1840253669.

It can be written as a sum of positive squares in 2 ways, for example, as 1406625025 + 4031996004 = 37505^2 + 63498^2 .

It is a cyclic number.

It is not a de Polignac number, because 5438621029 - 2¹¹ = 5438618981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5438620982 and 5438621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5438621429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41262 + ... + 112159.

It is an arithmetic number, because the mean of its divisors is an integer number (1359702475).

Almost surely, 2^5438621029 is an apocalyptic number.

It is an amenable number.

5438621029 is a deficient number, since it is larger than the sum of its proper divisors (188871).

5438621029 is a wasteful number, since it uses less digits than its factorization.

5438621029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188870.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 5438621029 is about 73747.0069155352. The cubic root of 5438621029 is about 1758.5832508979.

The spelling of 5438621029 in words is "five billion, four hundred thirty-eight million, six hundred twenty-one thousand, twenty-nine".