90411787 has 4 divisors (see below), whose sum is σ = 91556320. Its totient is φ = 89267256.

The previous prime is 90411751. The next prime is 90411793. The reversal of 90411787 is 78711409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78711409 = 7 ⋅11244487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90411787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90411487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572148 + ... + 572305.

It is an arithmetic number, because the mean of its divisors is an integer number (22889080).

Almost surely, 2^90411787 is an apocalyptic number.

90411787 is a deficient number, since it is larger than the sum of its proper divisors (1144533).

90411787 is a wasteful number, since it uses less digits than its factorization.

90411787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144532.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 90411787 is about 9508.5112925210. The cubic root of 90411787 is about 448.8229105390.

The spelling of 90411787 in words is "ninety million, four hundred eleven thousand, seven hundred eighty-seven".