145877839 has 8 divisors (see below), whose sum is σ = 153680000. Its totient is φ = 138088152.

The previous prime is 145877819. The next prime is 145877857. The reversal of 145877839 is 938778541.

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 145877839 - 2¹⁵ = 145845071 is a prime.

It is a super-2 number, since 2×145877839² = 42560687822619842, 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 (145877819) 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, 30022 + ... + 34540.

It is an arithmetic number, because the mean of its divisors is an integer number (19210000).

Almost surely, 2^145877839 is an apocalyptic number.

145877839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

145877839 is a deficient number, since it is larger than the sum of its proper divisors (7802161).

145877839 is a wasteful number, since it uses less digits than its factorization.

145877839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237.

The product of its digits is 1693440, while the sum is 52.

The square root of 145877839 is about 12077.9898575881. The cubic root of 145877839 is about 526.4168398433.

It can be divided in two parts, 1458 and 77839, that added together give a palindrome (79297).

The spelling of 145877839 in words is "one hundred forty-five million, eight hundred seventy-seven thousand, eight hundred thirty-nine".