139919307 has 8 divisors (see below), whose sum is σ = 203519040. Its totient is φ = 84799560.

The previous prime is 139919293. The next prime is 139919317. The reversal of 139919307 is 703919931.

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

It is not a de Polignac number, because 139919307 - 2²³ = 131530699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139919317) 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, 2119957 + ... + 2120022.

It is an arithmetic number, because the mean of its divisors is an integer number (25439880).

Almost surely, 2^139919307 is an apocalyptic number.

139919307 is a deficient number, since it is larger than the sum of its proper divisors (63599733).

139919307 is a wasteful number, since it uses less digits than its factorization.

139919307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239993.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 139919307 is about 11828.7491730952. The cubic root of 139919307 is about 519.1496296011.

It can be divided in two parts, 1399 and 19307, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 139919307 in words is "one hundred thirty-nine million, nine hundred nineteen thousand, three hundred seven".