1357947 has 6 divisors (see below), whose sum is σ = 1961492. Its totient is φ = 905292.

The previous prime is 1357927. The next prime is 1357969. The reversal of 1357947 is 7497531.

It is a happy number.

It is not a de Polignac number, because 1357947 - 2⁶ = 1357883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75433 + ... + 75450.

2^1357947 is an apocalyptic number.

1357947 is a deficient number, since it is larger than the sum of its proper divisors (603545).

1357947 is a wasteful number, since it uses less digits than its factorization.

1357947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150889 (or 150886 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 1357947 is about 1165.3098300452. The cubic root of 1357947 is about 110.7373874591.

It can be divided in two parts, 1357 and 947, that added together give a square (2304 = 48²).

The spelling of 1357947 in words is "one million, three hundred fifty-seven thousand, nine hundred forty-seven".