73147869 has 6 divisors (see below), whose sum is σ = 105658046. Its totient is φ = 48765240.

The previous prime is 73147861. The next prime is 73147883. The reversal of 73147869 is 96874137.

It can be written as a sum of positive squares in only one way, i.e., 73102500 + 45369 = 8550^2 + 213^2 .

It is not a de Polignac number, because 73147869 - 2³ = 73147861 is a prime.

It is a super-2 number, since 2×73147869² = 10701221478482322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73147861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4063762 + ... + 4063779.

Almost surely, 2^73147869 is an apocalyptic number.

It is an amenable number.

73147869 is a deficient number, since it is larger than the sum of its proper divisors (32510177).

73147869 is a wasteful number, since it uses less digits than its factorization.

73147869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127547 (or 8127544 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 73147869 is about 8552.6527463706. The cubic root of 73147869 is about 418.2159186819.

The spelling of 73147869 in words is "seventy-three million, one hundred forty-seven thousand, eight hundred sixty-nine".