1393401902 has 8 divisors (see below), whose sum is σ = 2098430712. Its totient is φ = 693925000.

The previous prime is 1393401883. The next prime is 1393401931. The reversal of 1393401902 is 2091043931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1387349 + ... + 1388352.

It is an arithmetic number, because the mean of its divisors is an integer number (262303839).

Almost surely, 2^1393401902 is an apocalyptic number.

1393401902 is a deficient number, since it is larger than the sum of its proper divisors (705028810).

1393401902 is a wasteful number, since it uses less digits than its factorization.

1393401902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775954.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1393401902 is about 37328.2989432950. The cubic root of 1393401902 is about 1116.9287407851.

The spelling of 1393401902 in words is "one billion, three hundred ninety-three million, four hundred one thousand, nine hundred two".