139769910 has 96 divisors (see below), whose sum is σ = 422240832. Its totient is φ = 31415040.

The previous prime is 139769899. The next prime is 139769911. The reversal of 139769910 is 19967931.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139769911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36612 + ... + 40248.

It is an arithmetic number, because the mean of its divisors is an integer number (4398342).

Almost surely, 2^139769910 is an apocalyptic number.

139769910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139769910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211120416).

139769910 is an abundant number, since it is smaller than the sum of its proper divisors (282470922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139769910 is a wasteful number, since it uses less digits than its factorization.

139769910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3715 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 139769910 is about 11822.4324908202. The cubic root of 139769910 is about 518.9647920696.

The spelling of 139769910 in words is "one hundred thirty-nine million, seven hundred sixty-nine thousand, nine hundred ten".