73400947 has 8 divisors (see below), whose sum is σ = 75342960. Its totient is φ = 71466240.

The previous prime is 73400939. The next prime is 73400953. The reversal of 73400947 is 74900437.

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 73400947 - 2³ = 73400939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73400447) 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, 22804 + ... + 25822.

It is an arithmetic number, because the mean of its divisors is an integer number (9417870).

Almost surely, 2^73400947 is an apocalyptic number.

73400947 is a deficient number, since it is larger than the sum of its proper divisors (1942013).

73400947 is a wasteful number, since it uses less digits than its factorization.

73400947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 73400947 is about 8567.4352638348. The cubic root of 73400947 is about 418.6976798967.

It can be divided in two parts, 73400 and 947, that added together give a palindrome (74347).

The spelling of 73400947 in words is "seventy-three million, four hundred thousand, nine hundred forty-seven".