1399724152 has 32 divisors (see below), whose sum is σ = 2724364800. Its totient is φ = 673480800.

The previous prime is 1399724149. The next prime is 1399724153. The reversal of 1399724152 is 2514279931.

It is a junction number, because it is equal to n+sod(n) for n = 1399724099 and 1399724108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399724153) 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, 28627 + ... + 60157.

It is an arithmetic number, because the mean of its divisors is an integer number (85136400).

Almost surely, 2^1399724152 is an apocalyptic number.

It is an amenable number.

1399724152 is a deficient number, since it is larger than the sum of its proper divisors (1324640648).

1399724152 is a wasteful number, since it uses less digits than its factorization.

1399724152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31747 (or 31743 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 1399724152 is about 37412.8875121929. The cubic root of 1399724152 is about 1118.6154638964.

The spelling of 1399724152 in words is "one billion, three hundred ninety-nine million, seven hundred twenty-four thousand, one hundred fifty-two".