464139 has 12 divisors (see below), whose sum is σ = 722176. Its totient is φ = 285552.

The previous prime is 464137. The next prime is 464141. The reversal of 464139 is 931464.

It is an interprime number because it is at equal distance from previous prime (464137) and next prime (464141).

It is not a de Polignac number, because 464139 - 2¹ = 464137 is a prime.

It is a super-2 number, since 2×464139² = 430850022642, which contains 22 as substring.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (464131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1867 + ... + 2100.

2⁴⁶⁴¹³⁹ is an apocalyptic number.

464139 is a deficient number, since it is larger than the sum of its proper divisors (258037).

464139 is a wasteful number, since it uses less digits than its factorization.

464139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986 (or 3983 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 464139 is about 681.2774765101. The cubic root of 464139 is about 77.4252626708.

Adding to 464139 its sum of digits (27), we get a triangular number (464166 = T₉₆₃).

The spelling of 464139 in words is "four hundred sixty-four thousand, one hundred thirty-nine".