399496 has 8 divisors (see below), whose sum is σ = 749070. Its totient is φ = 199744.

The previous prime is 399493. The next prime is 399499. The reversal of 399496 is 694993.

It is an interprime number because it is at equal distance from previous prime (399493) and next prime (399499).

It can be written as a sum of positive squares in only one way, i.e., 376996 + 22500 = 614^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 3¹⁰ + 9³ + 4 + 9³ + 9⁵ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (399491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24961 + ... + 24976.

2³⁹⁹⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

399496 is a deficient number, since it is larger than the sum of its proper divisors (349574).

399496 is a wasteful number, since it uses less digits than its factorization.

399496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49943 (or 49939 counting only the distinct ones).

The product of its digits is 52488, while the sum is 40.

The square root of 399496 is about 632.0569594586. The cubic root of 399496 is about 73.6496711019.

It can be divided in two parts, 3 and 99496, that added together give a palindrome (99499).

The spelling of 399496 in words is "three hundred ninety-nine thousand, four hundred ninety-six".