1390447354 has 4 divisors (see below), whose sum is σ = 2085671034. Its totient is φ = 695223676.

The previous prime is 1390447343. The next prime is 1390447361. The reversal of 1390447354 is 4537440931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1374407329 + 16040025 = 37073^2 + 4005^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347611837 + ... + 347611840.

Almost surely, 2^1390447354 is an apocalyptic number.

1390447354 is a deficient number, since it is larger than the sum of its proper divisors (695223680).

1390447354 is an equidigital number, since it uses as much as digits as its factorization.

1390447354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695223679.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1390447354 is about 37288.7027663876. The cubic root of 1390447354 is about 1116.1387426372.

The spelling of 1390447354 in words is "one billion, three hundred ninety million, four hundred forty-seven thousand, three hundred fifty-four".