139979470 has 8 divisors (see below), whose sum is σ = 251963064. Its totient is φ = 55991784.

The previous prime is 139979459. The next prime is 139979503. The reversal of 139979470 is 74979931.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6998964 + ... + 6998983.

It is an arithmetic number, because the mean of its divisors is an integer number (31495383).

Almost surely, 2^139979470 is an apocalyptic number.

139979470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139979470 is a deficient number, since it is larger than the sum of its proper divisors (111983594).

139979470 is a wasteful number, since it uses less digits than its factorization.

139979470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13997954.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 139979470 is about 11831.2919835494. The cubic root of 139979470 is about 519.2240275386.

The spelling of 139979470 in words is "one hundred thirty-nine million, nine hundred seventy-nine thousand, four hundred seventy".