87994154 has 4 divisors (see below), whose sum is σ = 131991234. Its totient is φ = 43997076.

The previous prime is 87994133. The next prime is 87994157. The reversal of 87994154 is 45149978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45149978 = 2 ⋅22574989.

It can be written as a sum of positive squares in only one way, i.e., 87142225 + 851929 = 9335^2 + 923^2 .

It is a super-2 number, since 2×87994154² = 15485942276351432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87994099 and 87994108.

It is not an unprimeable number, because it can be changed into a prime (87994157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21998537 + ... + 21998540.

Almost surely, 2^87994154 is an apocalyptic number.

87994154 is a deficient number, since it is larger than the sum of its proper divisors (43997080).

87994154 is a wasteful number, since it uses less digits than its factorization.

87994154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43997079.

The product of its digits is 362880, while the sum is 47.

The square root of 87994154 is about 9380.5199216248. The cubic root of 87994154 is about 444.7861683597.

The spelling of 87994154 in words is "eighty-seven million, nine hundred ninety-four thousand, one hundred fifty-four".