890366401 has 4 divisors (see below), whose sum is σ = 890662612. Its totient is φ = 890070192.

The previous prime is 890366383. The next prime is 890366423. The reversal of 890366401 is 104663098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104663098 = 2 ⋅52331549.

It can be written as a sum of positive squares in 2 ways, for example, as 365727376 + 524639025 = 19124^2 + 22905^2 .

It is a cyclic number.

It is not a de Polignac number, because 890366401 - 2⁷ = 890366273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890366441) 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, 143550 + ... + 149623.

It is an arithmetic number, because the mean of its divisors is an integer number (222665653).

Almost surely, 2^890366401 is an apocalyptic number.

It is an amenable number.

890366401 is a deficient number, since it is larger than the sum of its proper divisors (296211).

890366401 is a wasteful number, since it uses less digits than its factorization.

890366401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296210.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 890366401 is about 29839.0080431639. The cubic root of 890366401 is about 962.0321539413.

The spelling of 890366401 in words is "eight hundred ninety million, three hundred sixty-six thousand, four hundred one".