400347145 has 8 divisors (see below), whose sum is σ = 524090880. Its totient is φ = 291161520.

The previous prime is 400347121. The next prime is 400347173. The reversal of 400347145 is 541743004.

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

It is not a de Polignac number, because 400347145 - 2¹¹ = 400345097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3639465 + ... + 3639574.

It is an arithmetic number, because the mean of its divisors is an integer number (65511360).

Almost surely, 2^400347145 is an apocalyptic number.

It is an amenable number.

400347145 is a deficient number, since it is larger than the sum of its proper divisors (123743735).

400347145 is a wasteful number, since it uses less digits than its factorization.

400347145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279055.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 400347145 is about 20008.6767428533. The cubic root of 400347145 is about 737.0193869489.

The spelling of 400347145 in words is "four hundred million, three hundred forty-seven thousand, one hundred forty-five".