139767945 has 16 divisors (see below), whose sum is σ = 225392640. Its totient is φ = 73954944.

The previous prime is 139767937. The next prime is 139767977. The reversal of 139767945 is 549767931.

It is not a de Polignac number, because 139767945 - 2³ = 139767937 is a prime.

It is a super-3 number, since 3×139767945³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34780 + ... + 38589.

It is an arithmetic number, because the mean of its divisors is an integer number (14087040).

Almost surely, 2^139767945 is an apocalyptic number.

139767945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139767945 is a deficient number, since it is larger than the sum of its proper divisors (85624695).

139767945 is a wasteful number, since it uses less digits than its factorization.

139767945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73504.

The product of its digits is 1428840, while the sum is 51.

The square root of 139767945 is about 11822.3493858031. The cubic root of 139767945 is about 518.9623600474.

The spelling of 139767945 in words is "one hundred thirty-nine million, seven hundred sixty-seven thousand, nine hundred forty-five".