1399374075 has 72 divisors (see below), whose sum is σ = 2605801968. Its totient is φ = 661760000.

The previous prime is 1399374043. The next prime is 1399374101. The reversal of 1399374075 is 5704739931.

It is a happy number.

It is not a de Polignac number, because 1399374075 - 2⁵ = 1399374043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 370195 + ... + 373955.

It is an arithmetic number, because the mean of its divisors is an integer number (36191694).

Almost surely, 2^1399374075 is an apocalyptic number.

1399374075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1399374075 is a deficient number, since it is larger than the sum of its proper divisors (1206427893).

1399374075 is a wasteful number, since it uses less digits than its factorization.

1399374075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837 (or 3821 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 48.

The square root of 1399374075 is about 37408.2086579938. The cubic root of 1399374075 is about 1118.5221992826.

The spelling of 1399374075 in words is "one billion, three hundred ninety-nine million, three hundred seventy-four thousand, seventy-five".