138769465 has 8 divisors (see below), whose sum is σ = 173763648. Its totient is φ = 106188720.

The previous prime is 138769457. The next prime is 138769481. The reversal of 138769465 is 564967831.

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

It is not a de Polignac number, because 138769465 - 2³ = 138769457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603231 + ... + 603460.

It is an arithmetic number, because the mean of its divisors is an integer number (21720456).

Almost surely, 2^138769465 is an apocalyptic number.

It is an amenable number.

138769465 is a deficient number, since it is larger than the sum of its proper divisors (34994183).

138769465 is a wasteful number, since it uses less digits than its factorization.

138769465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206719.

The product of its digits is 1088640, while the sum is 49.

The square root of 138769465 is about 11780.0452036484. The cubic root of 138769465 is about 517.7236106466.

The spelling of 138769465 in words is "one hundred thirty-eight million, seven hundred sixty-nine thousand, four hundred sixty-five".