149739406 has 4 divisors (see below), whose sum is σ = 224609112. Its totient is φ = 74869702.

The previous prime is 149739379. The next prime is 149739409. The reversal of 149739406 is 604937941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149739409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37434850 + ... + 37434853.

It is an arithmetic number, because the mean of its divisors is an integer number (56152278).

Almost surely, 2^149739406 is an apocalyptic number.

149739406 is a deficient number, since it is larger than the sum of its proper divisors (74869706).

149739406 is an equidigital number, since it uses as much as digits as its factorization.

149739406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74869705.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 149739406 is about 12236.8053837593. The cubic root of 149739406 is about 531.0214146276.

The spelling of 149739406 in words is "one hundred forty-nine million, seven hundred thirty-nine thousand, four hundred six".