73013409 has 48 divisors (see below), whose sum is σ = 127953280. Its totient is φ = 39191040.

The previous prime is 73013393. The next prime is 73013411. The reversal of 73013409 is 90431037.

It is not a de Polignac number, because 73013409 - 2⁴ = 73013393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73013209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216489 + ... + 216825.

Almost surely, 2^73013409 is an apocalyptic number.

It is an amenable number.

73013409 is a deficient number, since it is larger than the sum of its proper divisors (54939871).

73013409 is a wasteful number, since it uses less digits than its factorization.

73013409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 73013409 is about 8544.7884116577. The cubic root of 73013409 is about 417.9595074593.

The spelling of 73013409 in words is "seventy-three million, thirteen thousand, four hundred nine".