139293473 has 8 divisors (see below), whose sum is σ = 153154560. Its totient is φ = 125632080.

The previous prime is 139293457. The next prime is 139293521. The reversal of 139293473 is 374392931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139293473 - 2⁴ = 139293457 is a prime.

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 139293473.

It is not an unprimeable number, because it can be changed into a prime (139293373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48458 + ... + 51251.

It is an arithmetic number, because the mean of its divisors is an integer number (19144320).

Almost surely, 2^139293473 is an apocalyptic number.

It is an amenable number.

139293473 is a deficient number, since it is larger than the sum of its proper divisors (13861087).

139293473 is a wasteful number, since it uses less digits than its factorization.

139293473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99847.

The product of its digits is 122472, while the sum is 41.

The square root of 139293473 is about 11802.2655875895. The cubic root of 139293473 is about 518.3744516020.

The spelling of 139293473 in words is "one hundred thirty-nine million, two hundred ninety-three thousand, four hundred seventy-three".