90749427 has 8 divisors (see below), whose sum is σ = 121158864. Its totient is φ = 60419808.

The previous prime is 90749413. The next prime is 90749437. The reversal of 90749427 is 72494709.

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

It is not a de Polignac number, because 90749427 - 2⁴ = 90749411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90749437) 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, 17248 + ... + 21885.

It is an arithmetic number, because the mean of its divisors is an integer number (15144858).

Almost surely, 2^90749427 is an apocalyptic number.

90749427 is a deficient number, since it is larger than the sum of its proper divisors (30409437).

90749427 is a wasteful number, since it uses less digits than its factorization.

90749427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39909.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 90749427 is about 9526.2493668810. The cubic root of 90749427 is about 449.3809215453.

The spelling of 90749427 in words is "ninety million, seven hundred forty-nine thousand, four hundred twenty-seven".