139147456 has 42 divisors (see below), whose sum is σ = 321208908. Its totient is φ = 59633280.

The previous prime is 139147453. The next prime is 139147457. The reversal of 139147456 is 654741931.

It is a super-2 number, since 2×139147456² = 38724029022543872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139147453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19050 + ... + 25321.

Almost surely, 2^139147456 is an apocalyptic number.

139147456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139147456 is an abundant number, since it is smaller than the sum of its proper divisors (182061452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139147456 is an equidigital number, since it uses as much as digits as its factorization.

139147456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44397 (or 44380 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 139147456 is about 11796.0779922820. The cubic root of 139147456 is about 518.1932563542.

The spelling of 139147456 in words is "one hundred thirty-nine million, one hundred forty-seven thousand, four hundred fifty-six".