1500399 has 12 divisors (see below), whose sum is σ = 2218216. Its totient is φ = 976752.

The previous prime is 1500397. The next prime is 1500407. The reversal of 1500399 is 9930051.

It is not a de Polignac number, because 1500399 - 2¹ = 1500397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500397) 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, 1552 + ... + 2325.

2^1500399 is an apocalyptic number.

1500399 is a deficient number, since it is larger than the sum of its proper divisors (717817).

1500399 is a wasteful number, since it uses less digits than its factorization.

1500399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 1500399 is about 1224.9077516287. The cubic root of 1500399 is about 114.4815731551.

The spelling of 1500399 in words is "one million, five hundred thousand, three hundred ninety-nine".