400158349 has 4 divisors (see below), whose sum is σ = 400400064. Its totient is φ = 399916636.

The previous prime is 400158337. The next prime is 400158361. The reversal of 400158349 is 943851004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (400158337) and next prime (400158361).

It is a cyclic number.

It is not a de Polignac number, because 400158349 - 2¹¹ = 400156301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400158379) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 118357 + ... + 121690.

It is an arithmetic number, because the mean of its divisors is an integer number (100100016).

Almost surely, 2^400158349 is an apocalyptic number.

It is an amenable number.

400158349 is a deficient number, since it is larger than the sum of its proper divisors (241715).

400158349 is a wasteful number, since it uses less digits than its factorization.

400158349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241714.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 400158349 is about 20003.9583332899. The cubic root of 400158349 is about 736.9035140183.

The spelling of 400158349 in words is "four hundred million, one hundred fifty-eight thousand, three hundred forty-nine".