139374563 has 4 divisors (see below), whose sum is σ = 139402440. Its totient is φ = 139346688.

The previous prime is 139374541. The next prime is 139374581. The reversal of 139374563 is 365473931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365473931 = 8317 ⋅43943.

It is a cyclic number.

It is not a de Polignac number, because 139374563 - 2⁸ = 139374307 is a prime.

It is a super-2 number, since 2×139374563² = 38850537622881938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139374563.

It is not an unprimeable number, because it can be changed into a prime (139374583) 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, 4145 + ... + 17202.

It is an arithmetic number, because the mean of its divisors is an integer number (34850610).

Almost surely, 2^139374563 is an apocalyptic number.

139374563 is a deficient number, since it is larger than the sum of its proper divisors (27877).

139374563 is an equidigital number, since it uses as much as digits as its factorization.

139374563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27876.

The product of its digits is 204120, while the sum is 41.

The square root of 139374563 is about 11805.7004451240. The cubic root of 139374563 is about 518.4750230288.

The spelling of 139374563 in words is "one hundred thirty-nine million, three hundred seventy-four thousand, five hundred sixty-three".