90403706 has 4 divisors (see below), whose sum is σ = 135605562. Its totient is φ = 45201852.

The previous prime is 90403699. The next prime is 90403721. The reversal of 90403706 is 60730409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60730409 = 17 ⋅3572377.

It can be written as a sum of positive squares in only one way, i.e., 84474481 + 5929225 = 9191^2 + 2435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22600925 + ... + 22600928.

Almost surely, 2^90403706 is an apocalyptic number.

90403706 is a deficient number, since it is larger than the sum of its proper divisors (45201856).

90403706 is a wasteful number, since it uses less digits than its factorization.

90403706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45201855.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 90403706 is about 9508.0863479462. The cubic root of 90403706 is about 448.8095382191.

The spelling of 90403706 in words is "ninety million, four hundred three thousand, seven hundred six".