1363990 has 8 divisors (see below), whose sum is σ = 2455200. Its totient is φ = 545592.

The previous prime is 1363979. The next prime is 1363993. The reversal of 1363990 is 993631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68190 + ... + 68209.

It is an arithmetic number, because the mean of its divisors is an integer number (306900).

2^1363990 is an apocalyptic number.

1363990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1363990 is a deficient number, since it is larger than the sum of its proper divisors (1091210).

1363990 is a wasteful number, since it uses less digits than its factorization.

1363990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136406.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 1363990 is about 1167.8998244713. The cubic root of 1363990 is about 110.9014085466.

The spelling of 1363990 in words is "one million, three hundred sixty-three thousand, nine hundred ninety".