90847954 has 4 divisors (see below), whose sum is σ = 136271934. Its totient is φ = 45423976.

The previous prime is 90847951. The next prime is 90847961. The reversal of 90847954 is 45974809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45974809 = 1723 ⋅26683.

It can be written as a sum of positive squares in only one way, i.e., 84217329 + 6630625 = 9177^2 + 2575^2 .

It is a super-2 number, since 2×90847954² = 16506701491972232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90847951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22711987 + ... + 22711990.

Almost surely, 2^90847954 is an apocalyptic number.

90847954 is a deficient number, since it is larger than the sum of its proper divisors (45423980).

90847954 is a wasteful number, since it uses less digits than its factorization.

90847954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45423979.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 90847954 is about 9531.4193066930. The cubic root of 90847954 is about 449.5434942527.

The spelling of 90847954 in words is "ninety million, eight hundred forty-seven thousand, nine hundred fifty-four".