1390408470 has 64 divisors (see below), whose sum is σ = 4044833280. Its totient is φ = 337068000.

The previous prime is 1390408421. The next prime is 1390408501. The reversal of 1390408470 is 748040931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231106 + ... + 237045.

It is an arithmetic number, because the mean of its divisors is an integer number (63200520).

Almost surely, 2^1390408470 is an apocalyptic number.

1390408470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390408470 is an abundant number, since it is smaller than the sum of its proper divisors (2654424810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390408470 is a wasteful number, since it uses less digits than its factorization.

1390408470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468178 (or 468172 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1390408470 is about 37288.1813715821. The cubic root of 1390408470 is about 1116.1283382295.

The spelling of 1390408470 in words is "one billion, three hundred ninety million, four hundred eight thousand, four hundred seventy".