139889235 has 8 divisors (see below), whose sum is σ = 223822800. Its totient is φ = 74607584.

The previous prime is 139889231. The next prime is 139889237. The reversal of 139889235 is 532988931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 139889235 - 2² = 139889231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139889231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4662960 + ... + 4662989.

It is an arithmetic number, because the mean of its divisors is an integer number (27977850).

Almost surely, 2^139889235 is an apocalyptic number.

139889235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139889235 is a deficient number, since it is larger than the sum of its proper divisors (83933565).

139889235 is an equidigital number, since it uses as much as digits as its factorization.

139889235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325957.

The product of its digits is 466560, while the sum is 48.

The square root of 139889235 is about 11827.4779644690. The cubic root of 139889235 is about 519.1124343858.

The spelling of 139889235 in words is "one hundred thirty-nine million, eight hundred eighty-nine thousand, two hundred thirty-five".