90928401 has 4 divisors (see below), whose sum is σ = 121237872. Its totient is φ = 60618932.

The previous prime is 90928391. The next prime is 90928403. The reversal of 90928401 is 10482909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10482909 = 3 ⋅3494303.

It is a cyclic number.

It is not a de Polignac number, because 90928401 - 2¹⁰ = 90927377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90928403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15154731 + ... + 15154736.

It is an arithmetic number, because the mean of its divisors is an integer number (30309468).

Almost surely, 2^90928401 is an apocalyptic number.

It is an amenable number.

90928401 is a deficient number, since it is larger than the sum of its proper divisors (30309471).

90928401 is a wasteful number, since it uses less digits than its factorization.

90928401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30309470.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 90928401 is about 9535.6384683984. The cubic root of 90928401 is about 449.6761472348.

The spelling of 90928401 in words is "ninety million, nine hundred twenty-eight thousand, four hundred one".