1390667450 has 48 divisors (see below), whose sum is σ = 2692327680. Its totient is φ = 533776320.

The previous prime is 1390667419. The next prime is 1390667461. The reversal of 1390667450 is 547660931.

It is a junction number, because it is equal to n+sod(n) for n = 1390667398 and 1390667407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239279 + ... + 245021.

It is an arithmetic number, because the mean of its divisors is an integer number (56090160).

Almost surely, 2^1390667450 is an apocalyptic number.

1390667450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390667450 is a deficient number, since it is larger than the sum of its proper divisors (1301660230).

1390667450 is a wasteful number, since it uses less digits than its factorization.

1390667450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951 (or 5946 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1390667450 is about 37291.6538919904. The cubic root of 1390667450 is about 1116.1976312894.

The spelling of 1390667450 in words is "one billion, three hundred ninety million, six hundred sixty-seven thousand, four hundred fifty".