989472542 has 4 divisors (see below), whose sum is σ = 1484208816. Its totient is φ = 494736270.

The previous prime is 989472509. The next prime is 989472553. The reversal of 989472542 is 245274989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245274989 = 1429 ⋅171641.

It is a super-2 number, since 2×989472542² = 1958111822743883528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247368134 + ... + 247368137.

It is an arithmetic number, because the mean of its divisors is an integer number (371052204).

Almost surely, 2^989472542 is an apocalyptic number.

989472542 is a deficient number, since it is larger than the sum of its proper divisors (494736274).

989472542 is a wasteful number, since it uses less digits than its factorization.

989472542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494736273.

The product of its digits is 1451520, while the sum is 50.

The square root of 989472542 is about 31455.8824705332. The cubic root of 989472542 is about 996.4784606511.

The spelling of 989472542 in words is "nine hundred eighty-nine million, four hundred seventy-two thousand, five hundred forty-two".