90154747 has 4 divisors (see below), whose sum is σ = 90229216. Its totient is φ = 90080280.

The previous prime is 90154741. The next prime is 90154763. The reversal of 90154747 is 74745109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74745109 = 257 ⋅290837.

It is a cyclic number.

It is not a de Polignac number, because 90154747 - 2¹⁵ = 90121979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90154741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35388 + ... + 37849.

It is an arithmetic number, because the mean of its divisors is an integer number (22557304).

Almost surely, 2^90154747 is an apocalyptic number.

90154747 is a deficient number, since it is larger than the sum of its proper divisors (74469).

90154747 is a wasteful number, since it uses less digits than its factorization.

90154747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74468.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 90154747 is about 9494.9853607049. The cubic root of 90154747 is about 448.3971734921.

The spelling of 90154747 in words is "ninety million, one hundred fifty-four thousand, seven hundred forty-seven".