73690389 has 12 divisors (see below), whose sum is σ = 106678572. Its totient is φ = 49017600.

The previous prime is 73690387. The next prime is 73690399. The reversal of 73690389 is 98309637.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24830289 + 48860100 = 4983^2 + 6990^2 .

It is not a de Polignac number, because 73690389 - 2¹ = 73690387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73690387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4732 + ... + 13029.

It is an arithmetic number, because the mean of its divisors is an integer number (8889881).

Almost surely, 2^73690389 is an apocalyptic number.

It is an amenable number.

73690389 is a deficient number, since it is larger than the sum of its proper divisors (32988183).

73690389 is a wasteful number, since it uses less digits than its factorization.

73690389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18228 (or 18225 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 73690389 is about 8584.3106304467. The cubic root of 73690389 is about 419.2473083524.

It can be divided in two parts, 736 and 90389, that added together give a cube (91125 = 45³).

The spelling of 73690389 in words is "seventy-three million, six hundred ninety thousand, three hundred eighty-nine".