1501399 has 6 divisors (see below), whose sum is σ = 1584960. Its totient is φ = 1422036.

The previous prime is 1501369. The next prime is 1501411. The reversal of 1501399 is 9931051.

It is not a de Polignac number, because 1501399 - 2¹³ = 1493207 is a prime.

It is a Duffinian number.

1501399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1719 + ... + 2440.

It is an arithmetic number, because the mean of its divisors is an integer number (264160).

2^1501399 is an apocalyptic number.

1501399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1501399 is a deficient number, since it is larger than the sum of its proper divisors (83561).

1501399 is an equidigital number, since it uses as much as digits as its factorization.

1501399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197 (or 4178 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1501399 is about 1225.3158776414. The cubic root of 1501399 is about 114.5070010911.

The spelling of 1501399 in words is "one million, five hundred one thousand, three hundred ninety-nine".