90403406 has 8 divisors (see below), whose sum is σ = 142742280. Its totient is φ = 42822648.

The previous prime is 90403381. The next prime is 90403421. The reversal of 90403406 is 60430409.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189481 + ... + 1189556.

It is an arithmetic number, because the mean of its divisors is an integer number (17842785).

Almost surely, 2^90403406 is an apocalyptic number.

90403406 is a deficient number, since it is larger than the sum of its proper divisors (52338874).

90403406 is a wasteful number, since it uses less digits than its factorization.

90403406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379058.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 90403406 is about 9508.0705718879. The cubic root of 90403406 is about 448.8090417682.

It can be divided in two parts, 90403 and 406, that added together give a palindrome (90809).

The spelling of 90403406 in words is "ninety million, four hundred three thousand, four hundred six".