139952077 has 4 divisors (see below), whose sum is σ = 139984416. Its totient is φ = 139919740.

The previous prime is 139952069. The next prime is 139952089. The reversal of 139952077 is 770259931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139952077 - 2³ = 139952069 is a prime.

It is a super-2 number, since 2×139952077² = 39173167713227858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139952777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8449 + ... + 18742.

It is an arithmetic number, because the mean of its divisors is an integer number (34996104).

Almost surely, 2^139952077 is an apocalyptic number.

It is an amenable number.

139952077 is a deficient number, since it is larger than the sum of its proper divisors (32339).

139952077 is an equidigital number, since it uses as much as digits as its factorization.

139952077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32338.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 139952077 is about 11830.1342764991. The cubic root of 139952077 is about 519.1901558295.

The spelling of 139952077 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, seventy-seven".