139789534 has 4 divisors (see below), whose sum is σ = 209684304. Its totient is φ = 69894766.

The previous prime is 139789523. The next prime is 139789543. The reversal of 139789534 is 435987931.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×139789534² = 39082227631874312, 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, 34947382 + ... + 34947385.

It is an arithmetic number, because the mean of its divisors is an integer number (52421076).

Almost surely, 2^139789534 is an apocalyptic number.

139789534 is a deficient number, since it is larger than the sum of its proper divisors (69894770).

139789534 is an equidigital number, since it uses as much as digits as its factorization.

139789534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69894769.

The product of its digits is 816480, while the sum is 49.

The square root of 139789534 is about 11823.2624093353. The cubic root of 139789534 is about 518.9890788623.

The spelling of 139789534 in words is "one hundred thirty-nine million, seven hundred eighty-nine thousand, five hundred thirty-four".