90475437 has 8 divisors (see below), whose sum is σ = 129913504. Its totient is φ = 55677168.

The previous prime is 90475403. The next prime is 90475439. The reversal of 90475437 is 73457409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90475437 - 2⁶ = 90475373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2319883 = 90475437 / (9 + 0 + 4 + 7 + 5 + 4 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90475395 and 90475404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90475439) 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, 1159903 + ... + 1159980.

It is an arithmetic number, because the mean of its divisors is an integer number (16239188).

Almost surely, 2^90475437 is an apocalyptic number.

It is an amenable number.

90475437 is a deficient number, since it is larger than the sum of its proper divisors (39438067).

90475437 is a wasteful number, since it uses less digits than its factorization.

90475437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319899.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 90475437 is about 9511.8577049912. The cubic root of 90475437 is about 448.9282097777.

The spelling of 90475437 in words is "ninety million, four hundred seventy-five thousand, four hundred thirty-seven".