90073427 has 4 divisors (see below), whose sum is σ = 90224400. Its totient is φ = 89922456.

The previous prime is 90073387. The next prime is 90073439. The reversal of 90073427 is 72437009.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90073427 - 2⁶ = 90073363 is a prime.

It is a super-2 number, since 2×90073427² = 16226444503048658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90073393 and 90073402.

It is not an unprimeable number, because it can be changed into a prime (90073457) 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, 74588 + ... + 75785.

It is an arithmetic number, because the mean of its divisors is an integer number (22556100).

Almost surely, 2^90073427 is an apocalyptic number.

90073427 is a deficient number, since it is larger than the sum of its proper divisors (150973).

90073427 is a wasteful number, since it uses less digits than its factorization.

90073427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150972.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 90073427 is about 9490.7021341943. The cubic root of 90073427 is about 448.2623141592.

The spelling of 90073427 in words is "ninety million, seventy-three thousand, four hundred twenty-seven".