36438947 has 4 divisors (see below), whose sum is σ = 36494736. Its totient is φ = 36383160.

The previous prime is 36438943. The next prime is 36438971. The reversal of 36438947 is 74983463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74983463 = 4127 ⋅18169.

It is a cyclic number.

It is not a de Polignac number, because 36438947 - 2² = 36438943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36438898 and 36438907.

It is not an unprimeable number, because it can be changed into a prime (36438943) 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, 26903 + ... + 28224.

It is an arithmetic number, because the mean of its divisors is an integer number (9123684).

Almost surely, 2^36438947 is an apocalyptic number.

36438947 is a deficient number, since it is larger than the sum of its proper divisors (55789).

36438947 is an equidigital number, since it uses as much as digits as its factorization.

36438947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55788.

The product of its digits is 435456, while the sum is 44.

The square root of 36438947 is about 6036.4680898684. The cubic root of 36438947 is about 331.5293174153.

The spelling of 36438947 in words is "thirty-six million, four hundred thirty-eight thousand, nine hundred forty-seven".